FRANK A. KAUFMAN, District Judge:
Plaintiffs, the holders of United States Letters Patents No. 2,452,549 (hereinafter '549) and No. 2,471,413 (hereinafter '413), allege infringement of both of said patents by defendant. The '549 patent, issued on November 2, 1948 on an application filed June 24, 1939, discloses a double pulse generator for producing pairs of voltage pulses to be used to test electronic equipment. Claim 13 of that patent, which is the only claim of...
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