WILLIAM C. COLEMAN, District Judge.
This is a patent infringement suit. The patent claimed to be infringed by the defendant company is Slama and Wolf patent No. 1,371,004, issued March 8, 1921, on application filed October 9, 1914, the plaintiff company having become the owner of the patent by assignment. The patent relates to the production and use of a catalyst, or contact substance, for the oxidation of sulphur dioxid which is part of the process of making sulphuric...
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