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公开(公告)号：US2565868A
公开(公告)日：1951-08-28
申请号：US78225447
申请日：1947-10-27
Applicant: JAMES ANDERSON JR
Inventor： MANN RALPH C , ASHCRAFT WILLIAM H
CPC classification number: H01M2/145 , H01M2/1693 , Y10T29/53087 , Y10T29/53135
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