GALSTON, District Judge.
This is a patent suit in which infringement is alleged of letters patent No. 1,726,107, to Gustav Ludwig Hertz, issued August 27, 1929, for an electric discharge tube.
The defenses are lack of invention and noninfringement.
The patent relates particularly to electric discharge tubes which have a positive column light for lighting purposes. The intended commercial use was for advertising signs.
The specification points...
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