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公开(公告)号：US2997140A
公开(公告)日：1961-08-22
申请号：US67051557
申请日：1957-07-08
Applicant: HOUDAILLE INDUSTRIES INC
Inventor： DOUGLAS RUMSEY ROLLIN , CARTER WILLIAM J
IPC: F16F9/14
CPC classification number: F16F9/145
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