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公开(公告)号：US2790918A
公开(公告)日：1957-04-30
申请号：US47156354
申请日：1954-11-29
Applicant: ALLIS LOUIS CO
Inventor： STEVEN GORAN
CPC classification number: H02K1/143 , B23K9/0026 , H02K1/146 , H02K2201/06 , Y10T29/49078
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