THOMAS, District Judge.
The bill in this case charges defendant with infringement of letters patent No. 1,565,305, granted to plaintiff on December 15, 1925, upon an application filed by John E. Bell on July 1, 1922, for a steam-generating plant.
The defenses are the usual ones of non-infringement and invalidity by reason of anticipation by, and lack of invention over, prior patents and publications and the prior art. It is also alleged as a further defense...
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