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公开(公告)号：US3157727A
公开(公告)日：1964-11-17
申请号：US9525861
申请日：1961-03-13
Applicant: MASSACHUSETTS INST TECHNOLOGY
Inventor： HARDY ARTHUR C , FOPIANO PAUL J , TRAGESER MILTON B
IPC: G01J4/04
CPC classification number: G01J4/04
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