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公开(公告)号:US2566698A
公开(公告)日:1951-09-04
申请号:US77097547
申请日:1947-08-28
Applicant: RCA CORP
Inventor: FREDENDALL GORDON L
IPC: H04N5/208
CPC classification number: H04N5/208
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公开(公告)号:US2472798A
公开(公告)日:1949-06-14
申请号:US51211543
申请日:1943-11-29
Applicant: RCA CORP
Inventor: FREDENDALL GORDON L
CPC classification number: H03H7/1775 , H03H7/0115 , H04J1/045
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公开(公告)号:US2458156A
公开(公告)日:1949-01-04
申请号:US54723044
申请日:1944-07-29
Applicant: RCA CORP
Inventor: FREDENDALL GORDON L
IPC: H04N5/12
CPC classification number: H04N5/126
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公开(公告)号:US2356308A
公开(公告)日:1944-08-22
申请号:US37687741
申请日:1941-01-31
Applicant: RCA CORP
Inventor: FREDENDALL GORDON L
IPC: H03H7/01
CPC classification number: H03H7/01
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公开(公告)号:US2933554A
公开(公告)日:1960-04-19
申请号:US45362954
申请日:1954-09-01
Applicant: RCA CORP
Inventor: FREDENDALL GORDON L
IPC: H04N9/24
CPC classification number: H04N9/24
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公开(公告)号:US2636937A
公开(公告)日:1953-04-28
申请号:US8494649
申请日:1949-04-01
Applicant: RCA CORP
Inventor: FREDENDALL GORDON L , KELL RAY D
CPC classification number: H04N11/12 , H04N7/08 , H04N7/0803
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公开(公告)号:US2502213A
公开(公告)日:1950-03-28
申请号:US52792044
申请日:1944-03-24
Applicant: RCA CORP
Inventor: FREDENDALL GORDON L , SCHROEDER ALFRED C
IPC: H04N7/084
CPC classification number: H04N7/084
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公开(公告)号:US2330965A
公开(公告)日:1943-10-05
申请号:US38288041
申请日:1941-03-12
Applicant: RCA CORP
Inventor: FREDENDALL GORDON L
IPC: H03F1/50
CPC classification number: H03F1/50
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公开(公告)号:US2299891A
公开(公告)日:1942-10-27
申请号:US36249440
申请日:1940-10-24
Applicant: RCA CORP
Inventor: FREDENDALL GORDON L
IPC: H04N5/228
CPC classification number: H04N5/228
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