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41.
公开(公告)号:US2686225A
公开(公告)日:1954-08-10
申请号:US16845350
申请日:1950-06-16
Applicant: BRITISH TELECOMM RES LTD
Inventor: THOMAS BAKER GEORGE
IPC: G11C11/23
CPC classification number: G11C11/23
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公开(公告)号:US2600873A
公开(公告)日:1952-06-17
申请号:US19153150
申请日:1950-10-23
Applicant: BRITISH TELECOMM RES LTD
Inventor: GODSON HOLLOWAY DENNIS
IPC: H03C1/54
CPC classification number: H03C1/54
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43.Apparatus for compressing or expanding the frequency bands of electric oscillations 失效
Title translation: 用于压缩或扩展电振荡频带的装置公开(公告)号:US2545871A
公开(公告)日:1951-03-20
申请号:US3129448
申请日:1948-06-05
Applicant: BRITISH TELECOMM RES LTD
Inventor: ARTHUR BELL DAVID
IPC: H03H7/34
CPC classification number: H03H7/34
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公开(公告)号:US3045904A
公开(公告)日:1962-07-24
申请号:US81232159
申请日:1959-05-11
Applicant: BRITISH TELECOMM RES LTD
Inventor: DODIMEAD GAITE HAROLD
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公开(公告)号:US2886645A
公开(公告)日:1959-05-12
申请号:US35747253
申请日:1953-05-26
Applicant: BRITISH TELECOMM RES LTD
Inventor: THOMAS BAKER GEORGE
IPC: H04Q3/42
CPC classification number: H04Q3/42
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公开(公告)号:US2883455A
公开(公告)日:1959-04-21
申请号:US50258455
申请日:1955-04-20
Applicant: BRITISH TELECOMM RES LTD
Inventor: GAITE HAROLD D
IPC: H04L13/14
CPC classification number: H04L13/14
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公开(公告)号:US2847670A
公开(公告)日:1958-08-12
申请号:US39168953
申请日:1953-11-12
Applicant: BRITISH TELECOMM RES LTD
Inventor: JAMES COX FREDERICK
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公开(公告)号:US2844796A
公开(公告)日:1958-07-22
申请号:US55567655
申请日:1955-12-27
Applicant: BRITISH TELECOMM RES LTD
Inventor: OTTO FELIX MICHAEL
IPC: H03C3/38
CPC classification number: H03C3/38
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49.Apparatus for converting varying unidirectional voltage into alternating voltage 失效
Title translation: 用于将变化的单向电压转换成交流电压的装置公开(公告)号:US2801283A
公开(公告)日:1957-07-30
申请号:US27224052
申请日:1952-02-18
Applicant: BRITISH TELECOMM RES LTD
Inventor: RAYMOND BEAUFOY
IPC: H04L25/22
CPC classification number: H04L25/22
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公开(公告)号:US2772325A
公开(公告)日:1956-11-27
申请号:US35293753
申请日:1953-05-04
Applicant: BRITISH TELECOMM RES LTD
Inventor: GAITE HAROLD D
IPC: H01H63/16
CPC classification number: H01H63/16
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