THOMAS, District Judge.
On an application filed August 10, 1916, patent No. 1,258,423 was issued to Fritz Lowenstein on March 5, 1918. By mesne assignment the plaintiff corporation acquired title on November 15, 1924. The application of the patent in suit is a division of an earlier application serial No. 569,325, filed by Lowenstein on June 28, 1910. The bill charges infringement, and the defendant pleads invalidity and noninfringement.
The invention of the...
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