EXHIBIT 1
JOINT FILING AGREEMENT
In accordance with Rule 13d-1(k) under the Securities Exchange Act of
1934, as amended, each of the persons named below agrees to the joint filing of
a Statement on Schedule 13D (including amendments thereto) with respect to the
Common Stock, no par value, of MKS Instruments, Inc., a Massachusetts
corporation, and further agrees that this Joint Filing Agreement be included as
an exhibit to such filings provided that, as contemplated by Section
13d-1(k)(ii), no person shall be responsible for the completeness or accuracy
of the information concerning the other persons making the filing, unless such
person knows or has reason to believe that such information is inaccurate.
In evidence thereof, the undersigned, being duly authorized, hereby
execute this Agreement this February 7, 2002.
This Joint Filing Agreement may be executed in any number of counterparts,
all of which together shall constitute one and the same instrument.
XXXXXXX ELECTRIC CO.
By: /s/ Xxxxxx X. Xxxxx
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Name: Xxxxxx X. Xxxxx
Title: Assistant Secretary
ASTEC AMERICA, INC.
By: /s/ Xxxxx X. Xxxx
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Name: Xxxxx X. Xxxx
Title: Vice President
