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公开(公告)号:US2121359A
公开(公告)日:1938-06-21
申请号:US13407437
申请日:1937-03-31
Applicant: RCA CORP
Inventor: LUCK DAVID G C , NORTON LOWELL E
CPC classification number: G04F13/02 , G01R13/208
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公开(公告)号:US2113214A
公开(公告)日:1938-04-05
申请号:US10816336
申请日:1936-10-29
Applicant: RCA CORP
Inventor: LUCK DAVID G C
IPC: H04B14/02
CPC classification number: H04B14/02
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公开(公告)号:US2092887A
公开(公告)日:1937-09-14
申请号:US4767535
申请日:1935-10-31
Applicant: RCA CORP
Inventor: LUCK DAVID G C
CPC classification number: H03K25/00
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