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公开(公告)号：US2428647A
公开(公告)日：1947-10-07
申请号：US53630344
申请日：1944-05-19
Applicant: LLOYD LAWSON , ANTHONY J D ANNA
Inventor： JOSEPH BOYER
IPC: F16H59/02
CPC classification number: F16H59/02 , Y10T74/20073
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