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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:US1984499A
公开(公告)日:1934-12-18
申请号:US63311232
申请日:1932-09-14
Applicant: RADIO RES LAB INC
Inventor: ST LAURENT HERBERT
IPC: H03H7/01
CPC classification number: H03H7/0146 , H03H7/1775
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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:US2041270A
公开(公告)日:1936-05-19
申请号:US69473833
申请日:1933-10-23
Applicant: RADIO RES LAB INC
Inventor: ST LAURENT HERBERT
IPC: H01J9/32
CPC classification number: H01J9/32
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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:US1986894A
公开(公告)日:1935-01-08
申请号:US55236331
申请日:1931-07-22
Applicant: RADIO RES LAB INC
Inventor: ST LAURENT HERBERT
IPC: H03F1/08
CPC classification number: H03F1/08
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