MR. JUSTICE WHITTAKER delivered the opinion of the Court.
On April 17, 1956, respondent, Convertible Top Replacement Co., Inc., acquired a "Territorial Grant" (coextensive with "the Commonwealth of Massachusetts") of all rights in Letters Patent No. 2,569,724, commonly known as the Mackie-Duluk patent, and 10 days later commenced this action against petitioners, Aro Manufacturing Co., Inc., and several of its officers, to enjoin the alleged infringement and contributory...
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