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公开(公告)号：US2151187A
公开(公告)日：1939-03-21
申请号：US14399737
申请日：1937-05-21
Applicant: CHRISTOPHER DANIEL E
Inventor： CHRISTOPHER DANIEL E
IPC: G01J1/12
CPC classification number: G01J1/124
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公开(公告)号：US2791126A
公开(公告)日：1957-05-07
申请号：US36626353
申请日：1953-07-06
Applicant: CHRISTOPHER DANIEL E
Inventor： CHRISTOPHER DANIEL E
IPC: F16H7/14
CPC classification number: F16H7/14
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