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公开(公告)号:US1984479A
公开(公告)日:1934-12-18
申请号:US61734632
申请日:1932-06-15
Applicant: RADIO RES LAB INC
Inventor: ALLEN HEANY JOHN
IPC: H01J17/28
CPC classification number: H01J17/28
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12.Method and apparatus for amplifying or detecting electrical variations 失效
Title translation: 用于放大或检测电气变化的方法和装置公开(公告)号:US1974957A
公开(公告)日:1934-09-25
申请号:US58029531
申请日:1931-12-11
Applicant: RADIO RES LAB INC
Inventor: ALLEN HEANY JOHN , ST LAURENT HERBERT
IPC: H03F1/16
CPC classification number: H03F1/16
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公开(公告)号:US1963254A
公开(公告)日:1934-06-19
申请号:US50711731
申请日:1931-01-07
Applicant: RADIO RES LAB INC
Inventor: URMSON WILLIAM G
IPC: H01J19/42
CPC classification number: H01J19/42 , H01J2893/0002
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公开(公告)号:US1947771A
公开(公告)日:1934-02-20
申请号:US60659832
申请日:1932-04-14
Applicant: RADIO RES LAB INC
Inventor: HAFFCKE PHILIP M
IPC: H04B1/16
CPC classification number: H04B1/1638
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公开(公告)号:US2058738A
公开(公告)日:1936-10-27
申请号:US69474033
申请日:1933-10-23
Applicant: RADIO RES LAB INC
Inventor: ST LAURENT HERBERT
IPC: H01J3/02
CPC classification number: H01J3/025 , H01J2893/0061
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公开(公告)号:US1947774A
公开(公告)日:1934-02-20
申请号:US55218631
申请日:1931-07-21
Applicant: RADIO RES LAB INC
Inventor: ALLEN HEANY JOHN , HAFFCKE PHILIP M
IPC: H01J3/02
CPC classification number: H01J3/025 , H01J2893/0061
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公开(公告)号:US1974945A
公开(公告)日:1934-09-25
申请号:US50713331
申请日:1931-01-07
Applicant: RADIO RES LAB INC
Inventor: BARNETT DAVID A
IPC: H01J1/13
CPC classification number: H01J1/13
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