MR. JUSTICE REED delivered the opinion of the Court.
Petitioner, General Electric Company, brought this patent infringement suit based on Pacz Patent No. 1,410,499, relating to a tungsten filament for incandescent lamps. The patent, issued March 21, 1922, on an application filed February 20, 1917, contains process and product claims; only the latter are here involved. The District Court for Eastern New York held claims 25, 26 and 27 valid and infringed, and gave petitioner...
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