WILBUR, Circuit Judge.
Appellants brought this action for infringement of patent for a wrench, No. 1,380,643, issued to appellant Samuel Eagle June 7, 1921. Appellee defended upon the ground that the patent is invalid for lack of invention, and the trial court held the patent to be invalid for that reason.
Appellant's wrench, as shown in the following drawings of the patent, consists of a handle with a square end adapted to fit into standard sockets in current...
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