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公开(公告)号：US2832227A
公开(公告)日：1958-04-29
申请号：US45571954
申请日：1954-09-13
Applicant: KEITH MACLEOD
Inventor： KEITH MACLEOD
IPC: F16H13/10 , G11B19/265
CPC classification number: F16H13/10 , G11B19/265 , Y10T477/343
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