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公开(公告)号:US2002201A
公开(公告)日:1935-05-21
申请号:US55921431
申请日:1931-08-25
Applicant: RADIO RES LAB INC
Inventor: ALLEN HEANY JOHN , ST LAURENT HERBERT
IPC: H04B1/16
CPC classification number: H04B1/163
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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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3.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: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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