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公开(公告)号:US2819449A
公开(公告)日:1958-01-07
申请号:US40534654
申请日:1954-01-21
Applicant: RCA CORP
Inventor: HEROLD EDWARD W
IPC: H01J25/52
CPC classification number: H01J25/52
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公开(公告)号:US2294298A
公开(公告)日:1942-08-25
申请号:US34974640
申请日:1940-08-02
Applicant: RCA CORP
Inventor: HEROLD EDWARD W
IPC: H01J21/12
CPC classification number: H01J21/12 , H01J2893/0032
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公开(公告)号:US2273107A
公开(公告)日:1942-02-17
申请号:US26494239
申请日:1939-03-30
Applicant: RCA CORP
Inventor: HEROLD EDWARD W
IPC: H03G7/02
CPC classification number: H03G7/02
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公开(公告)号:US2219102A
公开(公告)日:1940-10-22
申请号:US13937537
申请日:1937-04-28
Applicant: RCA CORP
Inventor: HEROLD EDWARD W
CPC classification number: H01J21/02 , H01J21/14 , H01J2893/0029
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公开(公告)号:US2146016A
公开(公告)日:1939-02-07
申请号:US17522437
申请日:1937-11-18
Applicant: RCA CORP
Inventor: HEROLD EDWARD W
IPC: H01J21/20
CPC classification number: H01J21/20 , H01J2893/003
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公开(公告)号:US2932735A
公开(公告)日:1960-04-12
申请号:US61653156
申请日:1956-10-17
Applicant: RCA CORP
Inventor: HEROLD EDWARD W
IPC: H03D7/12
CPC classification number: H03D7/125
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7.Frequency converter using four-zone transistor as oscillator-mixer 失效
Title translation: 变频器采用四区晶体管作为振荡混频器公开(公告)号:US2851594A
公开(公告)日:1958-09-09
申请号:US58382556
申请日:1956-05-09
Applicant: RCA CORP
Inventor: HEROLD EDWARD W
IPC: H03D7/12
CPC classification number: H03D7/12
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公开(公告)号:US2333719A
公开(公告)日:1943-11-09
申请号:US43274142
申请日:1942-02-28
Applicant: RCA CORP
Inventor: HEROLD EDWARD W
IPC: H04B1/50
CPC classification number: H04B1/50
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公开(公告)号:US2239560A
公开(公告)日:1941-04-22
申请号:US32059240
申请日:1940-02-24
Applicant: RCA CORP
Inventor: HEROLD EDWARD W
IPC: H03D7/02
CPC classification number: H03D7/02
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