Common use of Exercise Period Clause in Contracts

Exercise Period. Subject to paragraph lB hereof, the Registered Holder may exercise, in whole or in part (but not as to a fractional share of Warrant Stock), the purchase rights represented by this Warrant at any time and from time to time after the Date of Issuance to and including the fifth anniversary of the Date of Issuance (the "Exercise Period").

Exercise Period. Subject to paragraph lB hereof, the The Registered Holder may exercise, in whole or in part (but not as to a fractional share of Warrant Common Stock), the purchase rights represented by this Warrant at any time and from time to time after the Date of Issuance to and including the fifth anniversary of the Date of Issuance thereof (the "Exercise PeriodEXERCISE PERIOD").

Exercise Period. Subject to paragraph lB hereof, the The Registered Holder may exerciseexercise this Warrant, in whole or in part (but not as to a fractional share of Warrant Stock), the purchase rights represented by this Warrant at any time and from time to time after the Date of Issuance prior to and including the fifth anniversary of the Date of Issuance of the Warrant (the "Exercise Period").

Exercise Period. Subject to paragraph lB hereof, the The Registered Holder may exercise, in whole or in part (but not as to a fractional share of Warrant Common Stock), the purchase rights represented by this Warrant at any time and from time to time after the Date of Issuance to and including the fifth anniversary of the Date of Issuance 5:00 p.m. (Snyder, Texas time) on April ___, 2003 (the "Exercise Period").

Exercise Period. Subject to paragraph lB hereof, the The Registered Holder may exercise, in whole or in part (but not as to a fractional share of Warrant Stock)part, the purchase rights represented by this Warrant at any time and from time to time after during the period commencing on Date of Issuance to of this Warrant set forth above and including ending on the fifth annual anniversary of the Date of Issuance (the "Exercise Period").

Exercise Period. Subject to paragraph lB hereof, the The Registered Holder may exercise, in whole or in part (but not as to a fractional share of Warrant Common Stock), the purchase rights represented by this Warrant at any time and from time to time after the Date of Issuance to and including the fifth fourth anniversary of thereof (the “Exercise Period”). The “Date of Issuance (Issuance” shall be the "Exercise Period")Effective Date under the Purchase Agreement.

Exercise Period. Subject to paragraph lB hereof, the The Registered Holder may exercise, in whole or in part (but not as to a fractional share of Warrant Stock), the purchase rights represented by this Warrant at any time and from time to time after the Date of Issuance to and including the fifth anniversary of the Date of Issuance December 31, 2001 (as may be extended pursuant to Section 2B(vi) hereof, the "Exercise Period").

Exercise Period. Subject to paragraph lB hereof, the A Registered Holder may exercise, in whole or in ---------------- part (but not as to a fractional share of Warrant Common Stock), the purchase rights represented by this Warrant at any time and from time to time after the Date of Issuance to and including the fifth anniversary of the Date of Issuance until 5:00 p.m., Eastern Time, on August 28, 2011 (the "Exercise PeriodEXERCISE PERIOD").

Exercise Period. Subject to paragraph lB hereof, the The Registered Holder may exercise, in whole or in part --------------- (but not as to a fractional share of Warrant Common Stock), the purchase rights represented by this Warrant at any time and from time to time after the Date of Issuance to and including the fifth anniversary of the Date of Issuance thereof (the "Exercise Period").

Exercise Period. Subject to paragraph lB hereof, the The Registered Holder may exercise, in whole or in part (but not as to a fractional share of Warrant Common Stock), the purchase rights represented by this Warrant at any time and from time to time after the Date of Issuance to and including the fifth tenth anniversary of the Date of Issuance thereof (the "Exercise Period").

Exercise Period. Subject to paragraph lB hereof, the The Registered Holder may exercise, in whole or in part (but not as to a fractional share of Warrant Stock), the purchase rights represented by this Warrant at any time and from time to time after the Date of Issuance to and including the fifth 10th anniversary of the Date of Issuance thereof (the "Exercise Period").

Exercise Period. Subject to paragraph lB hereof, the The Registered Holder may exercise, in whole or in part (but not as to a fractional share of Warrant Common Stock), the purchase rights represented by this Warrant at any time and from time to time after the Date of Issuance to and including the fifth anniversary of the Date of Issuance thereof (the "“Exercise Period"”).

Exercise Period. Subject to paragraph lB hereof, the A Registered Holder may exercise, in whole or in part (but not as to a fractional share of Warrant Common Stock), the purchase rights represented by this Warrant at any time and from time to time after the Date of Issuance to and including the fifth anniversary of the Date of Issuance until 5:00 p.m., Eastern Time, on November 8, 2011 (the "“Exercise Period"”).

Exercise Period. Subject to paragraph lB hereof, the The Registered Holder may exercise, in whole or in part (but not as to a fractional share of Warrant Common Stock), the purchase rights represented by this Warrant at any time and from time to time after the Date of Issuance to and including the fifth anniversary of the Date of Issuance (the "Exercise Period").5:00 p.m.

Exercise Period. Subject to paragraph lB hereof, the The Registered Holder may exercise, in whole or ---------------- in part (but not as to a fractional share of Warrant Common Stock), the purchase rights represented by this Warrant at any time and from time to time after until the Date of Issuance to and including the fifth third anniversary of the Date of Issuance (the "Exercise Period").

Exercise Period. Subject to paragraph lB hereof, the The Registered Holder may exercise, in whole or --------------- in part (but not as to a fractional share of Warrant Stock), the purchase rights represented by this Warrant at any time and from time to time (i) beginning after the Date of Issuance Issuance, (ii) up to and including the fifth third anniversary of the Date of Issuance such date (the "Exercise Period").

Exercise Period. Subject to paragraph lB hereof, the The Registered Holder may exercise, in whole or in part (but not as to a fractional share of Warrant Common Stock), the purchase rights represented by this Warrant at any time and from time to time-to-time after the Date of Issuance to and including the fifth anniversary of the Date of Issuance September 25, 2001 (the "Exercise Period").

Exercise Period. Subject to paragraph lB hereof, the The Registered Holder may exercise, in --------------- whole or in part (but not as to a fractional share of Warrant Stock), the purchase rights represented by this Warrant at any time and from time to time after the Date of Issuance to and including the fifth anniversary of the Date of Issuance 5:00 p.m., Chicago time, on March 4, 2002 (the "Exercise Period").

Exercise Period. Subject to paragraph lB hereof, the The Registered Holder may exercise, in ---------------- whole or in part (but not as to a fractional share of Warrant Common Stock), the purchase rights represented by this Warrant at any time and from time to time after until the Date of Issuance to and including the fifth third anniversary of the Date of Issuance (the "Exercise Period").. B.

Exercise Period. Subject to paragraph lB hereof, the The Registered Holder may exercise, in whole or in part (but not as to a fractional share of Warrant Common Stock), the purchase rights represented by this Warrant at any time and from time to time after the Date of Issuance to and including the fifth anniversary of the Date earlier of Issuance (i) the issuance of warrants under the Purchase Agreement or (ii) termination of the Purchase Agreement prior to the closing thereunder (the "“Exercise Period"”).

Exercise Period. Subject to paragraph lB hereof, the Registered Holder The holder of this Warrant may exercise, in whole or in part (but not as to a fractional share of Warrant Common Stock), the purchase rights represented by this Warrant at any time and from time to time after the Date of Issuance to and including the fifth seventh (7th) anniversary of the Date of Issuance hereof (the "“Exercise Period"”).

Exercise Period. Subject to paragraph lB hereof, the The Registered Holder may exercise, in whole or in part (but not as to a fractional share of Warrant Common Stock), the purchase rights represented by this Warrant at any time and from time to time after the Date completion of Issuance the Offering to and including that date which is the fifth second anniversary of the Date of Issuance thereof (the "Exercise Period").

Exercise Period. Subject to paragraph lB hereof, the The Registered Holder may exercise, in whole or in part (but not as to a fractional share of Warrant Stock), the purchase rights represented by this Warrant at any time and from time to time after the Date of Issuance to and including the fifth tenth (10th) anniversary of the Date of Issuance thereof (the "“Exercise Period"”).

Exercise Period. Subject to paragraph lB hereof, the The Registered Holder may exercise, in whole or in part (but not as to a fractional share of Warrant Stock), the purchase rights represented by this Warrant at any time and from time to time after the Date of Issuance to and including the fifth seventh (7th) anniversary of the Date of Issuance thereof (the "“Exercise Period"”).

Exercise Period. Subject to paragraph lB hereofSection 9, the Registered Holder may exercise, in whole or in part (but not as to a fractional share of Warrant Stock), the purchase rights represented by this Warrant at any time and from time to time after the Date of Issuance to and including the fifth seventh (7th) anniversary of the Date of Issuance thereof (the "“Exercise Period"”).

Exercise Period. Subject to paragraph lB hereof, the The Registered Holder may exercise, in whole or in part (but not as to a fractional share of Warrant Common Stock), the purchase rights represented by this Warrant at any time and from time to time after the Date of Issuance to and including the fifth anniversary of the Date of Issuance 5:00 p.m. (Snyder, Texas time) on June 11, 2000 (the "Exercise Period").. 2 1B.

Exercise Period. Subject to paragraph lB hereof, the The Registered Holder may exercise, in whole or in part (but not as to a fractional share of Warrant Stock)--------------- part, the purchase rights represented by this Warrant at any time and from time to time after during the three (3) year period commencing with the Common Stock Registration Date of Issuance to and including the fifth anniversary of the Date of Issuance (the "Exercise Period")as defined in Section 5 hereof.

Exercise Period. Subject to paragraph lB hereof, the The Registered Holder may exercise, in whole or in part (but not as to a fractional share of Warrant Common Stock), the purchase rights represented by this Warrant at any time and from time to time after the Date of Issuance time, to and including the fifth date that is the seventh (7th) anniversary of the Date original date of Issuance issuance (the "“Exercise Period"”).

Exercise Period. Subject to paragraph lB hereof, the The Registered Holder may exercise, in whole or in part (but not as to a fractional share of Warrant Common Stock), the purchase rights represented by this Warrant at any time and from time to time after the Date of Issuance to and including the fifth anniversary first to occur of (i) December 31, 2007, or (ii) the consummation of a Sale of the Date of Issuance Company (the "“Exercise Period"”). 1 To be the Applicable Warrant Share Amount determined in accordance with the Company Warrant Agreement. 2 To be determined in accordance with the Company Warrant Agreement.

Exercise Period. Subject to paragraph lB 1B hereof, the Registered Holder may exercise, in whole or in part (but not as to a fractional share of Warrant Stock), the purchase rights represented by this Warrant at any time and from time to time tune after the Date of Issuance to and including the fifth second anniversary of the Date of Issuance date thereof (the "Exercise Period").

Exercise Period. Subject to paragraph lB hereof, the The Registered Holder may exercise, in whole or in part (but not as to a fractional share of Warrant Common Stock), the purchase rights represented by this Warrant at any time and from time to time after the Date of Issuance issuance of this Warrant to and including the fifth third (3rd) anniversary of the Date of Issuance set forth above (the "Exercise Period").

Exercise Period. Subject to paragraph lB hereof, the The Registered Holder may exercise, in whole or ---------------- in part (but not as to a fractional share of Warrant Common Stock), the purchase rights represented by this Warrant at any time and from time to time after until the Date earlier of Issuance (i) November 8, 1999, or (ii) the date in which the Registered Holder elects to and including the fifth anniversary convert all of the Date principal and accrued but unpaid interest into securities of Issuance the Company in accordance with Section 5 of that certain Promissory Note, of even date herewith, issued by the Company in favor of the Registered Holder (the "Exercise Period").

Exercise Period. Subject to paragraph lB hereof, the The Registered Holder may exercise, in whole or in part (but not as to a fractional share of Warrant Stock), the purchase rights represented by this Warrant at any time and from time to time after the Date of Issuance to and including until the fifth anniversary of the Date of Issuance (the "Exercise Period")Expiration Date.