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公开(公告)号：US3495061A
公开(公告)日：1970-02-10
申请号：US3495061D
申请日：1968-07-11
Applicant: IBM
Inventor： COFFIN SPENCER S , MANCE ROBERT J
IPC: H01H1/02
CPC classification number: H01H1/0201 , Y10T29/49105
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