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公开(公告)号：US3396585A
公开(公告)日：1968-08-13
申请号：US56042166
申请日：1966-06-27
Applicant: MAGNASTATIC CORP
Inventor： KAMPAS GEORGE S , WISWALL LAWRENCE S
IPC: G04C23/34
CPC classification number: G04C23/34 , Y10T74/115
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