Graver Tank & Mfg. Co., Inc. v. Linde Air Products Co.
339 U.S. 605 (1950)
Nature of the Case
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Facts
Linde (P) was the owner of the Jones patent for an electric welding process and for fluxes to be used therewith. P brought an action for infringement against Graver (Ds). The trial court held four flux claims valid and infringed and certain other flux claims and all process claims invalid. The Court of Appeals affirmed findings of validity and infringement as to the four flux claims but reversed the trial court and held valid the process claims and the remaining contested flux claims. The Supreme Court reversed the judgment of the Court of Appeals insofar as it reversed that of the trial court, and reinstated the District Court decree. Rehearing was granted.
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