COXE, District Judge.
This is a suit for a declaratory judgment decreeing that the Lefort reissue patent, No. 22,241, issued December 29, 1942, for a process for the production of ethylene oxide, owned by the defendant, is invalid and void as to all claims and not infringed by the plaintiff.
The plaintiff is the owner of a large plant at Baltimore, Maryland, which, for a considerable period prior to November 1942, was engaged in the production of ethylene...
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