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公开(公告)号：US3227965A
公开(公告)日：1966-01-04
申请号：US25222563
申请日：1963-01-17
Applicant: BECKMAN INSTRUMENTS INC
Inventor： LOUIS MADSEN RAYMOND , JOMAR SONGLI
IPC: H03K3/282
CPC classification number: H03K3/2823
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