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HIRS v. DETROIT FILTER CORPORATION

No. 19466.

424 F.2d 1040 (1970)

Gene HIRS, Hydromation Engineering Company, a Michigan Corporation, and Moore Filtration Company, a Michigan Corporation, Plaintiffs-Appellants, v. DETROIT FILTER CORPORATION, Defendant-Appellee.

United States Court of Appeals, Sixth Circuit.

April 16, 1970.

Attorney(s) appearing for the Case

H. P. Settle, Jr., Southfield, Mich., for plaintiffs-appellants; Settle, Batchelder & Oltman, Southfield, Mich., on brief.

Don K. Harness, Detroit, Mich., for defendant-appellee; Harness, Dickey & Pierce, Detroit, Mich., on brief.

Before PHILLIPS, Chief Judge, and CELEBREZZE and PECK, Circuit Judges.

JOHN W. PECK, Circuit Judge.

This is the third suit between these parties. Appellants are the owner and licensees of United States Letters Patent Nos. 2,867,325 and 2,867,326, covering generally an industrial filter designed to filter dirty liquids. In the first action between these parties the District Court found that a filter manufactured and sold by appellee infringed the above patents. Pursuant to that finding, the District Court, on November 22, 1965, enjoined...

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