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公开(公告)号：US3242753A
公开(公告)日：1966-03-29
申请号：US23476662
申请日：1962-11-01
Applicant: NAT RES DEV
IPC: F16H15/38
CPC classification number: F16H15/38 , F16H2015/383 , Y10T74/19288 , Y10T477/6243
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