CHASE, Circuit Judge.
On November 28, 1927, the plaintiff filed an application in the Patent Office, serial No. 236098, for a patent for an improvement in mufflers used to deaden the noise made by the exhaust from a gasoline engine. The defendant filed his application for a patent on the same improvement on January 18, 1928, serial No. 247550, and an interference was declared. After a hearing before the Examiner of Interferences, priority of invention was awarded...
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