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EXHIBIT E
JOINT FILING AGREEMENT
The undersigned each agree as follows: (i) that certain statement on
Schedule 13D relating to the Common Stock, par value $.01 per share, of
Input/Output, Inc., a Delaware corporation, is filed on behalf of each of them,
(ii) such Statement on Schedule 13D is adopted by each of them, (iii) all
future amendments to such Statement on Schedule 13D will, unless written notice
to the contrary is delivered as described below, be jointly filed on behalf of
each of them, and (iv) the provisions of Rule 13d-1(f)(1) under the Securities
Exchange Act of 1934, as amended, apply to each of them. This Agreement may be
terminated with respect to the obligation to file jointly future amendments to
such Statement on Schedule 13D as to any of the undersigned upon such person
giving written notice thereof to each of the other persons signatory hereto, at
the principal office thereof.
EXECUTED as of April 30, 1999.
SCF-IV, L.P.
By: SCF-IV G.P., Limited Partnership
By: X.X. Xxxxxxx & Associates,
Incorporated
By: /s/ X.X. Xxxxxxx
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X.X. Xxxxxxx, President
SCF-IV, G.P., LIMITED PARTNERSHIP
By: X.X. Xxxxxxx & Associates, Incorporated
By: /s/ X.X. Xxxxxxx
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X.X. Xxxxxxx, President
X.X. XXXXXXX & ASSOCIATES, INCORPORATED
By: /s/ X.X. Xxxxxxx
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X.X. Xxxxxxx, President
X.X. XXXXXXX
/s/ X.X. Xxxxxxx
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X.X. Xxxxxxx, individually
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