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公开(公告)号：US2856531A
公开(公告)日：1958-10-14
申请号：US58864456
申请日：1956-06-01
Applicant: BAIRD ASSOCIATES ATOMIC INSTR
Inventor： WILLEM BROUWER
IPC: G01J3/18
CPC classification number: G01J3/1804
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