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公开(公告)号：US2744211A
公开(公告)日：1956-05-01
申请号：US27572852
申请日：1952-03-10
Applicant: TRANSONIC CORP
Inventor： SOPHIA BERKMAN
IPC: H01T13/50
CPC classification number: H01T13/50
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公开(公告)号：US2780602A
公开(公告)日：1957-02-05
申请号：US25912751
申请日：1951-11-30
Applicant: TRANSONIC CORP
Inventor： SOPHIA BERKMAN
CPC classification number: F02F3/12 , B01D53/944 , B01J37/04 , F05C2201/021 , F05C2201/0448
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