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ABERCROMBIE v. COE

No. 7655.

119 F.2d 458 (1941)

ABERCROMBIE v. COE, Commissioner of Patents.

United States Court of Appeals for the District of Columbia.

Decided April 14, 1941.

Attorney(s) appearing for the Case

Lester B. Clark, of Houston, Tex. (Emmett L. Sheehan, of Washington, D. C., on the brief), for appellant.

Edwin L. Reynolds, of Washington, D. C. (William Wallace Cochran, Sol., United States Patent Office, of Washington, D. C., on the brief), for appellee.

Before GRONER, Chief Justice, and EDGERTON and RUTLEDGE, Associate Justices.

EDGERTON, Associate Justice.

This is a suit1 to obtain a patent. The Patent Office and the District Court held that the claims lack invention.

The claimed device is a blowout preventer, with rams and pistons, for sealing the head of an oil well by closing the space between the drill pipe and the well casing. For this purpose appellant uses three independent sources of power; well pressure, independent fluid pressure, and a manually...

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