CHASE, Circuit Judge.
The plaintiff, the owner and patentee of United States patent No. 1,866,771 granted on July 12, 1932, for a wrench, sued the defendants in the District Court for the Southern District of New York for infringement of one claim, the fourth. Validity was the issue contested, the claim having been infringed if valid. The patent was held invalid and the plaintiff has appealed.
The patented wrench is of the type formed by pivoting together...
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