NIELDS, District Judge.
This suit charges defendants with infringement of two process patents for the production of gasoline by cracking cheap petroleum oil. Patent No. 1,392,629 was granted in 1921 to Carbon Petroleum Dubbs and thereupon assigned to the plaintiff. The other patent, No. 1,537,593, was granted in 1925 to the plaintiff upon an application filed in 1920 by Gustav Egloff. All claims of both patents are in suit except claim 6 of the Dubbs patent.
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