COXE, District Judge.
This is a suit for infringement of the Martz patent, No. 1,692,132, issued November 20, 1928, for a thread-supporting device, which has been assigned to and is now owned by the plaintiff. The claims in issue are Nos. 1, 2, 5, 6, and 7. The defenses are invalidity and noninfringement.
The patent recites that in the clothing-making industry and knitting arts, where large spools of thread are used, "it frequently occurs" that in the "unwinding...
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