1. Graver Tank & Mfg. Co. v. Linde Air Products Co., Nos. 184, 185, SUPREME COURT OF THE UNITED STATES, January 5-6, 1949, Argued , February 28, 1949, Decided
OVERVIEW: The Supreme Court reinstated a trial court's judgment holding invalid patent claims for an electric welding process, since its finding that the process did not differ from prior art because "electric arc phenomenon" was present was not clear error.
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