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NATIONAL THEATRE SUPPLY CO. v. DA-LITE SCREEN CO.

No. 5887.

86 F.2d 454 (1936)

NATIONAL THEATRE SUPPLY CO. v. DA-LITE SCREEN CO., Inc.

Circuit Court of Appeals, Seventh Circuit.

November 27, 1936.

Attorney(s) appearing for the Case

George I. Haight, of Chicago, Ill., Howard W. Dix, of New York City, and Edward A. Haight, of Chicago, Ill., for appellant.

Walter M. Fuller, of Chicago, Ill., for appellee.

Before SPARKS, Circuit Judge, and LINDLEY and BRIGGLE, District Judges.

LINDLEY, District Judge.

Appellee brought suit in the District Court charging infringement of the patent to Heck, No. 1,819,776. Appellant answered, and the cause was referred to a master, who concluded that the patent was valid and infringed. The court overruled exceptions to the report and entered a decree enjoining appellant from manufacture or sale of the accused structures. This appeal followed.

Appellant contends that the patent is invalid because of...

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