DIETRICH, Circuit Judge.
The appellee, a research corporation and the holder of two combination patents — Doble No. 1,131,683, issued March 16, 1915, and Doble No. 1,359,042, issued November 16, 1920 — by its bill of complaint charged the appellant with infringement of claim No. 1 of the first and claims 2, 3, and 4 of the second, in that it was selling in California what was referred to in the record as the Oil-O-Matic heating device manufactured by...
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