GEIGER, District Judge.
Plaintiff is the owner of four patents: Gilchrist, No. 1,452,197, issued April 17, 1923, upon an application filed February 25, 1922; Gilchrist, No. 1,465,629, issued August 31, 1923, upon an application filed March 1, 1922; Gilchrist, No. 1,465,631, issued August 21, 1923, upon an application filed March 8, 1922; and Poplawski, No. 1,475,197, issued November 27, 1923, upon an application filed November 23, 1921.
These patents cover...
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