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公开(公告)号：US1770035A
公开(公告)日：1930-07-08
申请号：US30457828
申请日：1928-09-07
Applicant: WALTER HEAP , GEORGE READ WILLIAM , JAMES BARNES , NELSON KERMODE GEORGE
Inventor： WALTER HEAP , GEORGE READ WILLIAM , JAMES BARNES , NELSON KERMODE GEORGE
IPC: F16H1/32
CPC classification number: F16H1/32 , F16H2001/325
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