Brown & Bigelow, Paul W. Felt v. Robert C. Watson, Commissioner of Patents

DANAHER, Circuit Judge.

Appellants asked the District Court to authorize the Patent Office to issue a method patent based upon the following claim:

“The method of charging a cigarette lighter with a supply of fuel which consists in, injecting a normally instantly volatile, compressed liquefied fuel in atmosphere, into a check valved fuel chamber of the lighter by attaching a cartridge filled with liquefied fuel to the lighter fuel pressure chamber, simultaneously piercing the cartridge and opening the valve to cause the compressed fuel in the cartridge to be transferred into the fuel pressure…