CRAVEN, Circuit Judge:
This is an appeal from a decision by the district court that United States Letters Patent No. 2,760,255, owned by appellee Charles E. Compton and exclusively licensed to appellee Polan Industries, Inc., is valid and infringed by appellant Metal Products, Inc. Metal Products also appeals from the district court's decision that the plaintiffs had not misused the patent monopoly granted to Compton under No. 2,760,255 and three other United States...
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