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公开(公告)号:US2104449A
公开(公告)日:1938-01-04
申请号:US9553036
申请日:1936-08-12
Applicant: GRACE MACDONALD STOKELY , BELL TELEPHONE LABOR INC
Inventor: BOWNE LANGFORD J , HOWARD BEACH , LAMBERTY FREDERICK R
IPC: H04Q3/00
CPC classification number: H04Q3/0004
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2.Automatic telephone systems involving prepayment telephone lines 失效
Title translation: 自动电话系统涉及预付电话线公开(公告)号:US2533476A
公开(公告)日:1950-12-12
申请号:US3602448
申请日:1948-06-30
Applicant: BELL TELEPHONE LABOR INC
Inventor: LAMBERTY FREDERICK R , MARTINS ARTHUR S , WICHMAN WESLEY T
IPC: H04M17/02
CPC classification number: H04M17/023
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公开(公告)号:US2298205A
公开(公告)日:1942-10-06
申请号:US32551040
申请日:1940-03-23
Applicant: BELL TELEPHONE LABOR INC
Inventor: ERWIN EDSON L , LAMBERTY FREDERICK R
CPC classification number: A43B13/32 , H04Q3/0004 , H04Q3/0012
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4.Operator controlled coin collecting and refunding means for dial telephone systems 失效
Title translation: 拨号电话系统的操作员控制的硬币收取和退款手段公开(公告)号:US2558571A
公开(公告)日:1951-06-26
申请号:US5685448
申请日:1948-10-27
Applicant: BELL TELEPHONE LABOR INC
Inventor: LAMBERTY FREDERICK R
IPC: H04Q3/00
CPC classification number: H04Q3/0016
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公开(公告)号:US2040316A
公开(公告)日:1936-05-12
申请号:US75555634
申请日:1934-12-01
Applicant: BELL TELEPHONE LABOR INC
Inventor: LAMBERTY FREDERICK R , DAMME LOUIS E VAN
CPC classification number: H04Q3/00 , G01N21/5911
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公开(公告)号:US1690234A
公开(公告)日:1928-11-06
申请号:US23800727
申请日:1927-12-06
Applicant: BELL TELEPHONE LABOR INC
Inventor: LAMBERTY FREDERICK R
IPC: H04Q3/00
CPC classification number: H04Q3/00
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公开(公告)号:US2419958A
公开(公告)日:1947-05-06
申请号:US55069944
申请日:1944-08-23
Applicant: BELL TELEPHONE LABOR INC
Inventor: LAMBERTY FREDERICK R
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公开(公告)号:US2294464A
公开(公告)日:1942-09-01
申请号:US20107638
申请日:1938-04-09
Applicant: BELL TELEPHONE LABOR INC
Inventor: LAMBERTY FREDERICK R , WEAVER GEORGE W
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公开(公告)号:US2129011A
公开(公告)日:1938-09-06
申请号:US9991936
申请日:1936-09-09
Applicant: BELL TELEPHONE LABOR INC
Inventor: LAMBERTY FREDERICK R
IPC: H04Q3/00
CPC classification number: H04Q3/0004
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公开(公告)号:US2496629A
公开(公告)日:1950-02-07
申请号:US79197047
申请日:1947-12-16
Applicant: BELL TELEPHONE LABOR INC , AMERICAN TELEPHONE & TELEGRAPH
Inventor: LAMBERTY FREDERICK R , NITTERAUER FRANKLIN D
IPC: H04M11/02
CPC classification number: H04M11/022
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