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公开(公告)号：US2596136A
公开(公告)日：1952-05-13
申请号：US17068750
申请日：1950-06-27
Applicant: BECKWITH MFG CO
Inventor： ERNST WENTWORTH A
IPC: A43B23/16
CPC classification number: A43B23/16 , Y10T428/2395 , Y10T428/23986 , Y10T428/31801 , Y10T428/31942
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