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公开(公告)号：US3413491A
公开(公告)日：1968-11-26
申请号：US39790364
申请日：1964-09-21
Applicant: BECKMAN INSTRUMENTS INC
Inventor： REEVES GEORGE I , REED DAVID M
IPC: G01R19/04 , H03K5/1532
CPC classification number: G01R19/04 , H03K5/1532
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