JOHNSON, District Judge.
This suit arises out of alleged infringements of two patents assigned by the patentees to plaintiff. The patents involved are Otis patent, No. 1,592,618, dated July 13, 1926, and Plant patent, No. 1,686,103, dated October 2, 1928. The defendant denies
The National Boiler Washing Company, of which Otis...
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