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公开(公告)号:US3232546A
公开(公告)日:1966-02-01
申请号:US31387463
申请日:1963-10-04
Applicant: COMPTEURS COMP D
Inventor: FRANCIS FERRAND PIERRE ALAIN , EUGENE HOMMEAU JEAN PIERRE
IPC: G11B15/43 , G11B15/56
CPC classification number: G11B15/56 , G11B15/43