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公开(公告)号:US2311444A
公开(公告)日:1943-02-16
申请号:US31208140
申请日:1940-01-02
Applicant: RCA CORP
Inventor: KELLOGG EDWARD W
IPC: G03B21/20
CPC classification number: G03B21/2066
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公开(公告)号:US2287253A
公开(公告)日:1942-06-23
申请号:US36156040
申请日:1940-10-17
Applicant: RCA CORP
Inventor: KELLOGG EDWARD W
IPC: H03G7/00
CPC classification number: H03G7/00
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公开(公告)号:US2286742A
公开(公告)日:1942-06-16
申请号:US38122041
申请日:1941-03-01
Applicant: RCA CORP
Inventor: KELLOGG EDWARD W
CPC classification number: H04R1/345 , G10H1/32 , G11B33/06 , H04R1/2865
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公开(公告)号:US2271980A
公开(公告)日:1942-02-03
申请号:US30337339
申请日:1939-11-08
Applicant: RCA CORP
Inventor: KELLOGG EDWARD W
IPC: G11B7/00
CPC classification number: G11B7/00
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公开(公告)号:US2261387A
公开(公告)日:1941-11-04
申请号:US31208040
申请日:1940-01-02
Applicant: RCA CORP
Inventor: KELLOGG EDWARD W
IPC: H03G3/00
CPC classification number: H03G3/00
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公开(公告)号:US2200086A
公开(公告)日:1940-05-07
申请号:US12783837
申请日:1937-02-26
Applicant: RCA CORP
Inventor: KELLOGG EDWARD W
IPC: G03B27/475
CPC classification number: G03B27/475
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公开(公告)号:US2157178A
公开(公告)日:1939-05-09
申请号:US11844136
申请日:1936-12-31
Applicant: RCA CORP
Inventor: KELLOGG EDWARD W
IPC: H04M9/08
CPC classification number: H04M9/08
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公开(公告)号:US2157177A
公开(公告)日:1939-05-09
申请号:US11312136
申请日:1936-11-28
Applicant: RCA CORP
Inventor: KELLOGG EDWARD W
IPC: H04M9/08
CPC classification number: H04M9/08
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公开(公告)号:US2085194A
公开(公告)日:1937-06-29
申请号:US70424933
申请日:1933-12-28
Applicant: RCA CORP
Inventor: KELLOGG EDWARD W
IPC: G11B7/00
CPC classification number: G11B7/00
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