In re Griswold

Jackson, Judge,

delivered tbe opinion of the court:

This appeal is from a decision of the Board of Appeals of the United States Patent Office rejecting claims 4, 5, and 8 to 14 inclusive of an application for a patent for “certain new and useful improvements in Anti-Siphon Valve,” for lack of patentability over the prior art. Five claims were allowed.

The following references were cited:

Linstrom, 573,788, December 22, 1896,

Gulland,. 595,061, December 7, 1897,

Putnam, 1,901,119, March 14, 1933,

Jurs, 2,214,963, September 17, 1940.

The invention relates to an automatic pilot-controlled,…