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IN RE LEVIN

Patent Appeal No. 2220.

37 F.2d 754 (1930)

In re LEVIN.

Court of Customs and Patent Appeals.

February 21, 1930.

Attorney(s) appearing for the Case

Cushman, Bryant & Darby, of Washington, D. C. (Arlon V. Cushman, of Washington, D. C., of counsel), for appellant.

T. A. Hostetler, of Washington, D. C. (Howard S. Miller, of Washington, D. C., of counsel), for appellee.

Before GRAHAM, Presiding Judge, and BLAND, HATFIELD, GARRETT, and LENROOT, Associate Judges.

GRAHAM, Presiding Judge.

This is an appeal from the decision of the Board of Appeals of the Patent Office, rejecting claims 13 and 17 of appellant's application for patent on improvements in rotary engines. Said claims 13 and 17 are as follows:

"13. In a machine of the class described, the combination of a pair of rotors having intermeshing teeth, a casing having a curved wall fitted substantially airtight to the teeth...

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