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公开(公告)号：US3337154A
公开(公告)日：1967-08-22
申请号：US52792266
申请日：1966-02-16
Applicant: WESTINGHOUSE ELECTRIC CORP
Inventor： SMITH JR FREDERICK J , HAWKINS DAVID M
CPC classification number: H02P5/46 , B21C1/12 , B21C47/003 , B65H54/80
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