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CANADIAN FILTERS (HARWICH) LIMITED v. LEAR-SIEGLER, INC.

No. 7295.

412 F.2d 577 (1969)

CANADIAN FILTERS (HARWICH) LIMITED, Plaintiff, Appellee, v. LEAR-SIEGLER, INC., Defendant, Appellant.

United States Court of Appeals First Circuit.

Decided June 9, 1969.

Attorney(s) appearing for the Case

Martin J. Adelman, Birmingham, Mich., with whom Herbert P. Kenway, Kenway, Jenney & Hildreth, Boston, Mass., and Barnard, McGlynn & Reising, Birmingham, Mich., were on brief, for appellant.

W. R. Hulbert, Boston, Mass., with whom Charles C. Winchester, Jr. and George M. Doherty, Boston, Mass., were on brief, Fish, Richardson & Neave, Boston, Mass., of counsel, for appellee.

Before ALDRICH, Chief Judge, McENTEE and COFFIN, Circuit Judges.

ALDRICH, Chief Judge.

In September 1968 plaintiff Canadian Filters (Harwich) Limited, a Canadian corporation, hereinafter Filters, filed in the district court for the District of Massachusetts a complaint seeking a declaratory judgment against Lear-Siegler, Inc., a Delaware corporation, hereinafter Lear, to the effect that Lear's U. S. Patent No. 3,044,557 and Lear's corresponding and very similar Canadian Patent No. 666...

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