FRANK J. COLEMAN, District Judge.
The patent in suit covers a process for purifying the glass tubes used in neon lights before the neon is put into them. If a tube is merely evacuated before introducing the neon, impurities will in the operation of the lamp come from the walls of the tube, and, mixing with the neon, cause a great decrease in luminosity. There were various methods of eliminating these impurities from the neon after the contamination, but the patentee...
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