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公开(公告)号:US2440176A
公开(公告)日:1948-04-20
申请号:US44114942
申请日:1942-04-30
Applicant: RCA CORP
Inventor: KELLOGG EDWARD W
IPC: H02P5/74
CPC classification number: H02P5/74
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公开(公告)号:US2305875A
公开(公告)日:1942-12-22
申请号:US28228739
申请日:1939-06-30
Applicant: RCA CORP
Inventor: KELLOGG EDWARD W
IPC: H04N3/08
CPC classification number: H04N3/08
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公开(公告)号:US2190318A
公开(公告)日:1940-02-13
申请号:US20322438
申请日:1938-04-21
Applicant: RCA CORP
Inventor: KELLOGG EDWARD W
IPC: H03F1/36
CPC classification number: H03F1/36
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公开(公告)号:US2031836A
公开(公告)日:1936-02-25
申请号:US67413033
申请日:1933-06-03
Applicant: RCA CORP
Inventor: KELLOGG EDWARD W , READ JR SIDNEY
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公开(公告)号:US2031835A
公开(公告)日:1936-02-25
申请号:US66433833
申请日:1933-04-04
Applicant: RCA CORP
Inventor: KELLOGG EDWARD W
IPC: G11B7/00
CPC classification number: G11B7/00
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公开(公告)号:US1947543A
公开(公告)日:1934-02-20
申请号:US57868731
申请日:1931-12-03
Applicant: RCA CORP
Inventor: KELLOGG EDWARD W
IPC: G11B15/26
CPC classification number: G11B15/26 , Y10T74/19633
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