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公开(公告)号：US3171097A
公开(公告)日：1965-02-23
申请号：US10603861
申请日：1961-04-27
Applicant: BAIRD ATOMIC INC
Inventor： FITZMAURICE JOHN A , SABBAGH EDWARD N
IPC: G06K9/74
CPC classification number: G06K9/745
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