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HAMMEL v. ROBERTSON

No. 4966.

46 F.2d 839 (1931)

HAMMEL et al. v. ROBERTSON, Commissioner of Patents.

Court of Appeals of District of Columbia.

Decided January 6, 1931.

Attorney(s) appearing for the Case

Ralph B. Stewart, of Washington, D. C., and J. T. Basseches, of New York City, for appellants.

T. A. Hostetler, of Washington, D. C., for appellee.

Before MARTIN, Chief Justice, and ROBB and VAN ORSDEL, Associate Justices.

ROBB, Associate Justice.

Appeal from a decree in the Supreme Court of the District dismissing appellant's bill in equity, filed December 6, 1928, seeking a decree that Walter F. Hammel is the inventor of certain alleged new and useful improvements in envelopes as described in his application for letters patent filed in the Patent Office on July 16, 1919, and bearing serial No. 311,280, and that a patent issue to Esther S. Hammel as assignee.

On December 11...

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