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公开(公告)号:US3058790A
公开(公告)日:1962-10-16
申请号:US7432960
申请日:1960-12-07
Applicant: ADMIRAL CORP
Inventor: JOHN HAMMERAND DONALD
IPC: F16C27/08
CPC classification number: F16C27/08
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公开(公告)号:US3092391A
公开(公告)日:1963-06-04
申请号:US74821758
申请日:1958-07-14
Applicant: ADMIRAL CORP
Inventor: JOHN HAMMERAND DONALD
IPC: G11B17/16
CPC classification number: G11B17/16
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