SMITH, District Judge.
This is a suit under the patent laws for the infringement of Patent No. 1,580,814, hereinafter referred to as '814, of which the plaintiff is admittedly the owner. This patent issued on April 13, 1926, on an application filed on June 7, 1924. The defendant denies infringement and challenges the validity of the patent.
The patent covers "Improvements in Methods of Hydrating Cellulose Fibers" of which papers are made. Claims 1, 2 and 3...
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