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公开(公告)号：US3306119A
公开(公告)日：1967-02-28
申请号：US41820964
申请日：1964-12-14
Applicant: NAT RES DEV
Inventor： BRIE PERRY FORBES GEORGE DE , ALEXANDER PLINT MICHAEL , GEORGE FELLOWS THOMAS , NOEL ARMSTRONG JOHN
IPC: F16H15/38
CPC classification number: F16H15/38 , F16H2015/383
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