COLEMAN, District Judge.
This is a suit for infringement of a patent on an envelope making machine issued to A. Winkler and M. Dunnebier, November 15, 1921, No. 1,396,906, application for which was filed November 20, 1919. Plaintiff Baltimore Paper Company is the present owner of this patent, and the other plaintiff, the F. L. Smithe Machine Company, is the exclusive licensee. The defendant corporation denies infringement and also asserts invalidity of the patent...
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