NIELDS, District Judge.
This is the usual bill in equity charging Gillette Safety Razor Company with infringement of United States letters patent No. 1,407,930, granted to Julian W. Fretwell, the plaintiff, September 11, 1923. The invention is stated by the patentee to be for "new and useful Improvements in Locked Razors." The defense is noninfringement.
What did Fretwell contribute to the art? He testified to observing that inmates of jails and asylums were...
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