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2.Frequency modulation feed-back circuit for sound recording galvanometers 失效
Title translation: 用于录音电流计的频率调制反馈电路公开(公告)号:US2423285A
公开(公告)日:1947-07-01
申请号:US56543944
申请日:1944-11-28
Applicant: RCA CORP
Inventor: ALEXIS BADMAIEFF
IPC: G11B7/12
CPC classification number: G11B7/12
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公开(公告)号:US2414686A
公开(公告)日:1947-01-21
申请号:US46744242
申请日:1942-11-30
Applicant: RCA CORP
Inventor: ALEXIS BADMAIEFF
IPC: G11B7/00
CPC classification number: G11B7/00
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公开(公告)号:US2396531A
公开(公告)日:1946-03-12
申请号:US49268243
申请日:1943-06-29
Applicant: RCA CORP
Inventor: REISKIND HILLEL I , ALEXIS BADMAIEFF
IPC: H03H11/32
CPC classification number: H03H11/32
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6.
公开(公告)号:US2419001A
公开(公告)日:1947-04-15
申请号:US58213745
申请日:1945-03-10
Applicant: RCA CORP
Inventor: ALEXIS BADMAIEFF
IPC: H03G5/22
CPC classification number: H03G5/22
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公开(公告)号:US2397772A
公开(公告)日:1946-04-02
申请号:US50580043
申请日:1943-10-11
Applicant: RCA CORP
Inventor: ALEXIS BADMAIEFF
IPC: H03H7/075
CPC classification number: H03H7/175 , H03H7/075 , H03H7/1766
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公开(公告)号:US2385324A
公开(公告)日:1945-09-25
申请号:US50177843
申请日:1943-09-10
Applicant: RCA CORP
Inventor: ALEXIS BADMAIEFF
IPC: G11B7/00
CPC classification number: G11B7/00
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