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Publication numberUS2688658 A
Publication typeGrant
Publication dateSep 7, 1954
Filing dateJul 7, 1947
Priority dateJul 7, 1947
Publication numberUS 2688658 A, US 2688658A, US-A-2688658, US2688658 A, US2688658A
InventorsCarpenter Warren W, Collis Raymond E
Original AssigneeBell Telephone Labor Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Call data recording telephone system
US 2688658 A
Abstract  available in
Description  available in
Claims  available in
Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US111638 *Feb 7, 1871 Improvement in apparatus for the manufacture of confectionery
US958074 *Sep 2, 1908May 17, 1910Velochrone CompanyCombined speed and time indicator.
US1427181 *Jul 19, 1920Aug 29, 1922Westling Lester LSounding apparatus
US1676742 *Jul 12, 1924Jul 10, 1928Automatic Electric IncTraffic-recording equipment for telephone systems
US1723228 *Jun 15, 1925Aug 6, 1929 burnham
US1848174 *Feb 28, 1931Mar 8, 1932Bell Telephone Labor IncTrouble recording system
US2165924 *Oct 31, 1933Jul 11, 1939Bell Telephone Labor IncTelephone system
US2180824 *Feb 24, 1938Nov 21, 1939Western Electric CoAutomatic call ticketing system
US2289939 *Dec 18, 1939Jul 14, 1942Ass Telephone & Telegraph CoTelephone system
US2297365 *Jul 8, 1939Sep 29, 1942Associated Electric Lab IncTelephone system
US2350466 *Oct 31, 1942Jun 6, 1944Bell Telephone Labor IncTelephone system trouble recorder
US2351551 *May 29, 1943Jun 13, 1944Bell Telephone Labor IncTelephone system
US2355903 *Jun 27, 1942Aug 15, 1944Bell Telephone Labor IncSignaling system
US2366383 *Mar 27, 1937Jan 2, 1945B D Eisendrath Tanning CoAutomatic recorder
US2369071 *Jun 12, 1939Feb 6, 1945Automatic Elect LabTelephone system
US2374537 *Mar 27, 1940Apr 24, 1945Gen Ribbon Mills IncAutomatic article selecting system and apparatus
US2392916 *Jun 20, 1942Jan 15, 1946Brown Instr CoMeasuring instrument
US2419958 *Aug 23, 1944May 6, 1947Bell Telephone Labor IncCommunication system
US2428376 *Jun 12, 1943Oct 7, 1947Bell Telephone Labor IncTime controlled register for automatic telephone systems
US2437118 *Jul 20, 1942Mar 2, 1948Automatic Elect LabAutomatic telephone system having rating independent of routing
US2447533 *Jun 27, 1942Aug 24, 1948Bell Telephone Labor IncAutomatic toll ticketing system
US2513112 *Jul 19, 1944Jun 27, 1950Shepherd Judson O'dData recording system employing record controlled apparatus
US2522000 *May 5, 1943Sep 12, 1950American Telephone & TelegraphRecording telephone system
US2543022 *Aug 3, 1945Feb 27, 1951Standard Telephones Cables LtdMetering circuit control for automatic telephone systems
US2581287 *Feb 23, 1946Jan 1, 1952Automatic Elect LabAutomatic charge-recording telephone system
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2794070 *Jan 22, 1951May 28, 1957Gen Telephone Lab IncTape perforating machines for toll ticketing telephone systems
US2848543 *Oct 19, 1954Aug 19, 1958Bell Telephone Labor IncCall data recording telephone system
US2955163 *Apr 3, 1957Oct 4, 1960Gen Telephone Lab IncAutomatic toll ticketing telephone system
US3012711 *Dec 30, 1957Dec 12, 1961IbmTelephone dial controlled perforator
US3046342 *Apr 3, 1957Jul 24, 1962Automatic Elect LabAutomatic toll ticketing telephone system
US3196401 *Mar 25, 1960Jul 20, 1965Bell Telephone Labor IncData identity generator
US4056698 *Apr 20, 1976Nov 1, 1977Bell Telephone Laboratories, IncorporatedSpecial automatic trunk testing arrangement
US4147902 *May 6, 1977Apr 3, 1979Bell Telephone Laboratories, IncorporatedMethod of automatic trunk testing
Classifications
U.S. Classification379/119, 346/146, 346/80, 379/114.1, 346/50
International ClassificationH04M15/04
Cooperative ClassificationH04M15/04
European ClassificationH04M15/04