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Patent No. 2422750A: Plastic Bottle Crowner


Today in 1947, US Patent 2422750 A was issued, an invention of Harold E. Rue, assigned to Pabst Brewing Co., for his “Plastic Bottle Crowner.” There’s no Abstract, although in the description it includes this summary:

This invention appertains to bottle capping and more particularly to a novel machine for forming or molding plastic crown caps on bottle necks to bring about the tight sealing of the bottles.




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