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R. C. MAHON CO. v. DETROIT STEEL PRODUCTS CO.

No. 7909.

107 F.2d 335 (1939)

R. C. MAHON CO. v. DETROIT STEEL PRODUCTS CO.

Circuit Court of Appeals, Sixth Circuit.

November 8, 1939.

Attorney(s) appearing for the Case

Stuart C. Barnes, of Detroit, Mich. (Barnes, Kisselle, Laughlin & Raisch, of Detroit, Mich., on the brief), for appellant.

Arthur C. Beaumont, of Detroit, Mich. (William J. Belknap, Arthur C. Beaumont, and Whittemore, Hulbert & Belknap, all of Detroit, Mich., on the brief), for appellee.

Before HICKS, SIMONS, and ARANT, Circuit Judges.

HICKS, Circuit Judge.

The patent in suit, owned by appellee, is No. 1,574,586, February 23, 1926, to Loucks and Gillett, herein called Gillett. It is for "Building Construction" and relates to structures embodying sheet metal units, adapted, when assembled, to produce light but strong foundations for roofs, floors, etc. The defenses were invalidity and non-infringement.

The District Court decreed that Claims 5, 6 and 7 were valid and infringed. Claim 6 is...

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