GALSTON, District Judge.
This is a patent suit in which the defendants are charged with the infringement of letters patent No. 1,687,510. The patent issued October 16, 1928, on the application of Marvin Pipkin for an improvement in an electric lamp bulb.
The specification describes an improved method in frosting bulbs on the inside, and frosting other thin glassware. Frosting of an electric light bulb on the inside is desirable, since better diffusion with...
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