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公开(公告)号：US3479815A
公开(公告)日：1969-11-25
申请号：US3479815D
申请日：1967-09-27
Applicant: HAMILTON WATCH CO
Inventor： PRINDELL STUART M JR , PERRY MALCOLM R , MARTIN VINCENT W , FRITSCH DANIEL F
CPC classification number: G04F7/00
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