Common use of Period of Exercise Clause in Contracts

Period of Exercise. This Warrant is exercisable at any time or from time ------------------ to time on or after the date on which this Warrant is issued and delivered pursuant to the terms of the Securities Purchase Agreement and before 6:00 p.m., New York, New York time on the seventh (7th) anniversary of the date of issuance (the "Exercise Period").

Period of Exercise. This Warrant is exercisable at any time or from time ------------------ to time on or after the date on which this Warrant is issued and delivered pursuant to the terms of the Securities Purchase Agreement and before 6:00 5:00 p.m., New YorkYork City, New York time time, on the seventh third (7th3rd) anniversary of the date of issuance (the "Exercise Period").

Period of Exercise. This Warrant is exercisable at any time or -------------------- from time ------------------ to time on or after the date on which this Warrant is issued and delivered pursuant to the terms of the Securities Purchase Agreement and before 6:00 p.m., New York, New York time on the seventh fifth (7th5th) anniversary of the date of issuance (the "Exercise Period").

Period of Exercise. This Warrant is exercisable at any time or from time ------------------ to time on or after the date on which this Warrant is issued and delivered pursuant to the terms of the Securities Purchase Agreement (the "Issue Date") and before 6:00 5:00 p.m., New YorkYork City time, New York time on the seventh fifth (7th5th) anniversary of the date of issuance Issue Date (the "Exercise Period").

Period of Exercise. This Warrant is exercisable at any time or from time ------------------ to time on or after the date on which this Warrant is issued and delivered pursuant to the terms of the Securities Purchase Agreement and before 6:00 5:00 p.m., New YorkYork City, New York time time, on the seventh second (7th2nd) anniversary of the date of issuance (the "Exercise Period").

Period of Exercise. This Warrant is exercisable at any time or from ------------------ time ------------------ to time on or after the date on which this Warrant is issued and delivered pursuant to the terms of the Securities Purchase Agreement and before 6:00 p.m., New York, New York time on the seventh fifth (7th5th) anniversary of the date of issuance (the "Exercise Period").

Period of Exercise. This Warrant is exercisable at any time or from ------------------ time ------------------ to time on or after the date on which this Warrant is issued and delivered pursuant to the terms of the Securities Purchase Agreement and before 6:00 5:00 p.m., New York, New York City time on the seventh fifth (7th5th) anniversary of the date of issuance (the "Exercise Period").

Period of Exercise. This Warrant is exercisable at any time or from time ------------------ to time on or after the date on which this Warrant is issued and delivered pursuant to the terms of the Securities Purchase Agreement and before 6:00 5:00 p.m., New York, New York City time on the seventh fifth (7th5) anniversary of the date of issuance (the "Exercise Period").

Period of Exercise. This Warrant is exercisable at any time or from time ------------------ to time on or after the date on which this Warrant is issued and delivered pursuant to the terms of the Securities Purchase Agreement and before 6:00 5:00 p.m., New York, New York time on the seventh fifth (7th5th) anniversary of the date of issuance (the "Exercise Period").

Period of Exercise. This Warrant is exercisable at any time or from time ------------------ to time on or after the date on which this Warrant is issued and delivered pursuant to the terms of the Securities Purchase Agreement and before 6:00 8:00 p.m., New York, New York time on the seventh third (7th3rd) anniversary of the date of issuance (the "Exercise Period").

Period of Exercise. This Warrant is exercisable at any time or from time ------------------ to time on or after the date on which this Warrant is issued and delivered pursuant to the terms of the Securities Purchase Agreement and before 6:00 5:00 p.m., New YorkYork City time, New York time on the seventh fifth (7th5th) anniversary of the date of issuance (the "Exercise Period").

Period of Exercise. This Warrant is exercisable at any time or from time ------------------ to time on or after the date on which this Warrant is issued and delivered pursuant to the terms of the Securities Purchase Agreement and before 6:00 5:00 p.m., New YorkYork City, New York time on the seventh third (7th3rd) anniversary of the date of issuance (the "Exercise Period").

Period of Exercise. This Warrant is exercisable at any time or from time ------------------ to time on or after the date on which this Warrant is issued and delivered pursuant to the terms of the Securities Purchase Agreement and before 6:00 5:00 p.m., New YorkYork City time, New York time on the seventh (7th) anniversary of the date of issuance April 13, 2005 (the "Exercise Period").

Period of Exercise. This Except as provided in Section 1 above, this Warrant is exercisable at any time or from time ------------------ to time on or after that date which is 90 days after the date on which this Warrant is issued and delivered pursuant to the terms of the Securities Purchase Exchange Agreement (the "Issue Date") and before 6:00 5:00 p.m., New YorkYork City time, New York time on the seventh fifth (7th5th) year anniversary of the date of issuance Issue Date (the "Exercise Period").

Period of Exercise. This Warrant is exercisable at any time or from time ------------------ to time on or after the date on which this Warrant is issued and delivered pursuant to the terms of the Securities Purchase Agreement and before 6:00 p.m., New York, New York time on the seventh fifth (7th5th) anniversary of the date Date of issuance Issuance (the "Exercise PeriodEXERCISE PERIOD").

Period of Exercise. This Warrant is exercisable at any time or from time ------------------ to time on or after the date on which this Warrant is issued and delivered pursuant to the terms of the Securities Purchase Agreement and before 6:00 p.m., New York, New York time on the seventh fifth (7th5th) anniversary of the date of issuance (the "Exercise Period").

Period of Exercise. This Warrant is exercisable at any time or from time ------------------ to time on or after the date on which this Warrant is issued and delivered pursuant to the terms of the Securities Purchase Agreement and before 6:00 5:00 p.m., New York, New York City time on the seventh (7th) anniversary of the date of issuance November 25, 2000 (the "Exercise Period").

Period of Exercise. This Warrant is exercisable at any time or from time ------------------ to time on or after the date on which this Warrant is issued and delivered pursuant to the terms of the Securities Purchase Agreement and before 6:00 5:00 p.m., New York, New York City time on the seventh later of one (7th1) anniversary of year following the effective date of issuance a Registration Statement registering the shares of Common Stock underlying the Warrants or December 31, 2005 (the "Exercise Period").

Period of Exercise. This Warrant is exercisable at any time or from time ------------------ to time on or after the date on which this Warrant is issued and delivered pursuant to the terms of the Securities Purchase Agreement (the "Issue Date"), subject to the increase in the Company's authorized shares of Common Stock provided in Section 4(b) below and before 6:00 5:00 p.m., New YorkYork City time, New York time on the seventh fourth (7th4th) anniversary of the date of issuance Issue Date (the "Exercise Period").

Period of Exercise. This Warrant is exercisable at any time or from time ------------------ to time on or after the date on which this Warrant is issued and delivered pursuant to the terms of the Securities Purchase Agreement (the "Issue Date") and before 6:00 5:00 p.m., New YorkYork City time, New York time on the seventh (7th) anniversary of the date of issuance August 27, 2002 (the "Exercise Period").

Period of Exercise. This Warrant is exercisable at any time or from time ------------------ to time on or after the date on which this Warrant is issued and delivered pursuant to the terms of the Securities Purchase Agreement (the "Issue Date") and before 6:00 5:00 p.m., New York, New York City time on the seventh (7th) fifth anniversary of the date of issuance Issue Date (the "Exercise Period").

Period of Exercise. This Warrant is exercisable at any time or from time ------------------ to time on or after the date on which this Warrant is issued and delivered pursuant to the terms of the Securities Purchase Agreement (the "ISSUE DATE") and before 6:00 5:00 p.m., New York, New York City time on the seventh fifth (7th5th) anniversary of the date of issuance Issue Date (the "Exercise PeriodEXERCISE PERIOD"); provided, however, that this Warrant is subject to cancellation as provided in Sections 5(a) and 5(b) of the Securities Purchase Agreement.

Period of Exercise. This Warrant is exercisable at any time or from time ------------------ to time on or after the date on which this Warrant is issued and delivered pursuant to the terms of the Securities Purchase Agreement Agreement, and before 6:00 5:00 p.m., New York, New York City time on the seventh fifth (7th5th) anniversary of the date of issuance (the "Exercise Period").

Period of Exercise. This Warrant is exercisable at any time or from time ------------------ to time on or after the date on which this Warrant is issued and delivered pursuant to the terms of the Securities Purchase Agreement and before 6:00 5:00 p.m., New York, New York City time on the seventh (7th) anniversary of the date of issuance August 31, 2007 (the "Exercise Period").

Period of Exercise. This Warrant is exercisable at any time or from time ------------------ to time on or after the date on which this Warrant is issued and delivered pursuant to the terms of the Securities Purchase Agreement and before 6:00 5:00 p.m., New York, New York City time on the seventh later of two (7th2) anniversary years following the date on which this Warrant is issued and delivered pursuant to the terms of the date of issuance Securities Purchase Agreement (the "Exercise PeriodEXERCISE PERIOD").

Period of Exercise. This Warrant is exercisable at any time or from time ------------------ to time on or after the date on which this Warrant is issued and delivered pursuant to the terms of the Securities Purchase Agreement (the "Issued Date") and before 6:00 5:00 p.m., New York, New York City time on the seventh fifth (7th5th) anniversary of the date of issuance Issue Date (the "Exercise Period").

Period of Exercise. This Warrant is exercisable at any time or from time ------------------ to time on or after the one-year anniversary of the date on which this Warrant is issued and delivered pursuant to the terms of the Securities Purchase Agreement (the "Issue Date") and before 6:00 5:00 p.m., New YorkYork City time, New York time on the seventh fifth (7th5th) anniversary of the date of issuance Issue Date (the "Exercise Period").

Period of Exercise. This Warrant is exercisable at any time or from time ------------------ to time on or after the date on which this Warrant is issued and delivered pursuant to the terms of the Securities Purchase Agreement (the "Issue Date") and before 6:00 5:00 p.m., New YorkYork City time, New York time on the seventh third (7th3rd) anniversary of the date of issuance Issue Date (the "Exercise Period").

Period of Exercise. This Warrant is exercisable at any time or from time ------------------ to time on or after the date on which this Warrant is issued and delivered pursuant to the terms of the Securities Purchase Agreement and before 6:00 5:00 p.m., New York, New York City time on the seventh (7th) anniversary of the date of issuance August 31, 2009 (the "Exercise Period").

Period of Exercise. This Warrant is exercisable at any time or from time ------------------ to time on or after the date on which this Warrant is issued and delivered pursuant to the terms of the Securities Purchase Agreement and before 6:00 8:00 p.m., New York, New York time on the seventh third (7th3rd) anniversary of the date of issuance (the "Exercise Period").

Period of Exercise. This Warrant is exercisable at any time or from time ------------------ to time on or after the date on which this Warrant is issued and delivered pursuant to the terms of the Securities Purchase Debt Exchange Agreement and before 6:00 p.m., New York, New York time on the seventh fifth (7th5th) anniversary of the date of issuance (the "Exercise Period").

Period of Exercise. This Warrant is exercisable at any time or from time ------------------ to time on or after the date on which this Warrant is issued and delivered pursuant to the terms of the Securities Purchase Agreement (the "Issue Date") and before 6:00 5:00 p.m., New York, New York City time on the seventh (7th) anniversary of the date of issuance February 27, 2003 (the "Exercise Period").

Period of Exercise. This Warrant is exercisable at any time or from time ------------------ to time on or after the date on which this Warrant is issued and delivered pursuant to the terms of the Securities Purchase Agreement (the "Issue Date") and before 6:00 5:00 p.m., New York, New York City time on the seventh fourth (7th4th) anniversary of the date of issuance Issue Date (the "Exercise Period").

Period of Exercise. This Warrant is exercisable at any time or from time ------------------ to time on or after the date on which this Warrant is issued and delivered pursuant to the terms of the Securities Purchase Agreement and before 6:00 p.m., New York, New York time on the seventh fifth (7th5th) anniversary of the date of issuance (the "Exercise PeriodEXERCISE PERIOD").