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CTS CORP. v. PIHER INTERN. CORP.

No. 75-1100.

527 F.2d 95 (1975)

CTS CORPORATION, Plaintiff-Appellee, v. PIHER INTERNATIONAL CORPORATION and Piher Sociedad Anonima, Defendants-Appellants.

United States Court of Appeals, Seventh Circuit.

Decided December 17, 1975.

Rehearing Denied January 26, 1976.

Certiorari Denied March 22, 1976.

Attorney(s) appearing for the Case

Edwin M. Luedeka, Raiford A. Blackstone, Jr., and Robert B. Jones, Chicago, Ill., for Piher.

Walther E. Wyss, Robert L. Rohrback, Chicago, Ill., John J. Gaydos, Elkhart, Ind., for CTS Corp.

Before CLARK, Associate Justice (Retired), STEVENS, Circuit Judge, and GRANT, Senior District Judge.

Certiorari Denied March 22, 1976. See 96 S.Ct. 1485.

STEVENS, Circuit Judge.

Appellants contend that the district court erroneously rejected their attacks on the validity of the '6041 and '2852 patents on variable resistance controls and erroneously found that their "PT-15" trimmer infringed the former patent. The '604 patent discloses a flared bearing used as a dust excluding seal of an aperture in...

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