This is a patent suit arising on Letters Patent No. 2,084,427, dated June 22, 1937, issued to Neil O. Broderson and assigned to plaintiff. Plaintiff complains of infringement. Defendant denies infringement and alleges invalidity of the patent.
The invention relates to a method of making buttons of plastic material. There are three claims in the patent, of which Claim 1 is typical and sufficient...
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