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公开(公告)号：US2545879A
公开(公告)日：1951-03-20
申请号：US6085048
申请日：1948-11-19
Applicant: MCKEE DOOR COMPANY
Inventor： FRENTZEL HERMAN C
CPC classification number: F16H25/2261 , E05F11/34 , F16H25/2427 , Y10T74/1868
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