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公开(公告)号:US2689887A
公开(公告)日:1954-09-21
申请号:US9401949
申请日:1949-05-18
Applicant: CSF
Inventor: OSKAR DOEHLER
IPC: H03G3/22
CPC classification number: H03G3/22
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公开(公告)号:US2531972A
公开(公告)日:1950-11-28
申请号:US7608249
申请日:1949-02-12
Applicant: CSF
Inventor: OSKAR DOEHLER , HARRY HUBER
IPC: H01J25/44
CPC classification number: H01J25/44
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