AT&T Corporation (pre-2005)

GPTKB entity

Statements (95)
Predicate Object
gptkbp:instanceOf gptkb:telecommunications_company
gptkbp:acquiredBy gptkb:SBC_Communications
gptkbp:acquisitionYear 2005
gptkbp:country gptkb:United_States
gptkbp:dissolved 2005
gptkbp:divested gptkb:Baby_Bells
1984
gptkbp:formerName gptkb:American_Telephone_and_Telegraph_Company
gptkbp:founded 1885
gptkbp:founder gptkb:Alexander_Graham_Bell
gptkbp:headquartersLocation gptkb:New_York_City
https://www.w3.org/2000/01/rdf-schema#label AT&T Corporation (pre-2005)
gptkbp:industry telecommunications
gptkbp:keyPerson gptkb:David_Dorman
gptkb:Robert_Allen
gptkb:Theodore_Vail
gptkb:Michael_Armstrong
gptkbp:logo AT&T globe logo
gptkbp:notableEmployee gptkb:Amar_Bose
gptkb:Arno_Penzias
gptkb:Brian_Kernighan
gptkb:Claude_Shannon
gptkb:Dennis_Ritchie
gptkb:John_Bardeen
gptkb:John_R._Pierce
gptkb:John_Tukey
gptkb:Ken_Thompson
gptkb:Richard_Hamming
gptkb:Steven_Chu
gptkb:Walter_Brattain
gptkb:William_Shockley
gptkb:John_Pierce
gptkb:William_Baker
gptkb:Mervin_Kelly
gptkb:Harold_Rosen
gptkbp:notableEvent gptkb:1984_Bell_System_divestiture
invention of the transistor
development of C programming language
breakup of Bell System
development of UNIX
acquisition by SBC Communications
creation of Bell Labs
introduction of 800 toll-free service
introduction of Picturephone
introduction of T1 carrier system
introduction of cellular telephone service
introduction of data communications services
introduction of digital transmission
introduction of direct distance dialing
introduction of electronic switching systems
introduction of fiber optic cables
introduction of touch-tone dialing
launch of Telstar satellite
gptkbp:notableProduct gptkb:C_programming_language
gptkb:UNIX_operating_system
gptkb:information_theory
gptkb:laser
gptkb:Picturephone
gptkb:Bell_System_logo
solar cell
transistor
satellite communications
digital signal processing
fiber optic communications
modem
network management systems
telecommunications satellites
telephone switch
TAT-1 transatlantic telephone cable
touch-tone telephone
gptkbp:notableWinner IEEE Medal of Honor (multiple employees)
National Medal of Science (multiple employees)
National Medal of Technology (multiple employees)
Nobel Prize (multiple employees)
Turing Award (multiple employees)
gptkbp:numberOfEmployees over 1 million (at peak)
gptkbp:parentCompany gptkb:Bell_System
gptkbp:product industrial equipment
internet services
networking services
long distance telephone service
gptkbp:spinOff gptkb:Lucent_Technologies
gptkb:AT&T_Broadband
gptkb:AT&T_Wireless
gptkb:NCR_Corporation
AT&T Computer Systems
gptkbp:stockExchange gptkb:New_York_Stock_Exchange
gptkbp:stockSymbol T
gptkbp:subsidiary gptkb:Bell_Labs
gptkb:Western_Electric
gptkb:AT&T_Long_Lines
gptkbp:successor gptkb:AT&T_Inc.
gptkbp:website www.att.com
gptkbp:bfsParent gptkb:AT&T_Inc._(after_2006)
gptkbp:bfsLayer 7