CA786431A - Telephone system calculator - Google Patents

Telephone system calculator

Info

Publication number
CA786431A
CA786431A CA786431A CA786431DA CA786431A CA 786431 A CA786431 A CA 786431A CA 786431 A CA786431 A CA 786431A CA 786431D A CA786431D A CA 786431DA CA 786431 A CA786431 A CA 786431A
Authority
CA
Canada
Prior art keywords
telephone system
system calculator
calculator
telephone
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA786431A
Inventor
G. Nightingale John
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Corp
Original Assignee
Western Electric Co Inc
Publication date
Application granted granted Critical
Publication of CA786431A publication Critical patent/CA786431A/en
Expired legal-status Critical Current

Links

CA786431A Telephone system calculator Expired CA786431A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA786431T

Publications (1)

Publication Number Publication Date
CA786431A true CA786431A (en) 1968-05-28

Family

ID=36249085

Family Applications (1)

Application Number Title Priority Date Filing Date
CA786431A Expired CA786431A (en) Telephone system calculator

Country Status (1)

Country Link
CA (1) CA786431A (en)

Similar Documents

Publication Publication Date Title
CA937680A (en) Interface system
CA926780A (en) Telecommunications systems
CA786431A (en) Telephone system calculator
CA869173A (en) Telephone switching system
CA792307A (en) Telephone set
CA776803A (en) Telephone system
CA792853A (en) Telephone system
CA949215A (en) Calculator system
CA801832A (en) Telephone extension system
CA802337A (en) Telephone systems
CA789392A (en) Calculator
CA777641A (en) Comparison calculator
AU421492B2 (en) Telecommunication system
CA809747A (en) Telephone system
CA922030A (en) Telephone system
CA799057A (en) Communication system
CA798449A (en) Communication system
CA802453A (en) Communication system
CA802335A (en) Telecommunication systems
CA791232A (en) Telecommunication systems
CA798942A (en) Hand telephone set
CA782007A (en) Telephone answering system
AU3246168A (en) Telecommunication system
AU2450267A (en) Nurse-to-patient call system
AU424434B2 (en) Telephone extension system