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公开(公告)号：US2974254A
公开(公告)日：1961-03-07
申请号：US75096358
申请日：1958-07-25
Applicant: BAIRD ATOMIC INC
Inventor： FITZMAURICE JOHN A , EUGENE BLACQUIER
IPC: G06K11/04
CPC classification number: G06K11/04
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