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公开(公告)号：US2282398A
公开(公告)日：1942-05-12
申请号：US36251940
申请日：1940-10-24
Applicant: STACKPOLE CARBON CO
Inventor： EHRLICH SIDNEY B
CPC classification number: H01C1/032 , H01C7/001 , Y10T29/49087 , Y10T156/1041
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