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NEWCOMB, DAVID CO. v. R. C. MAHON CO.

No. 5984.

59 F.2d 899 (1932)

NEWCOMB, DAVID CO., Inc., v. R. C. MAHON CO.

Circuit Court of Appeals, Sixth Circuit.

June 27, 1932.

Attorney(s) appearing for the Case

R. S. Binns, of Detroit, Mich. (Barthel, Flanders & Barthel and Otto F. Barthel, all of Detroit, Mich., on the brief), for appellant.

S. C. Barnes, of Detroit, Mich. (Arthur Raisch, and Barnes & Kisselle, all of Detroit, Mich., on the brief), for appellee.

Before MOORMAN, HICKS, and HICKENLOOPER, Circuit Judges.

HICKENLOOPER, Circuit Judge.

The District Court held claims 11 and 12 of patent to Russell C. Mahon, No. 1,641,181, for a pneumatic conveyor, to be valid and to have been infringed by appellant. It will be sufficient to quote but one of these claims.1 This appeal followed.

At the time of the application for the patent in suit, pneumatic conveyors for sawdust and shavings, and even heavier...

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