CA532449A - Automatic telephone systems - Google Patents

Automatic telephone systems

Info

Publication number
CA532449A
CA532449A CA532449A CA532449DA CA532449A CA 532449 A CA532449 A CA 532449A CA 532449 A CA532449 A CA 532449A CA 532449D A CA532449D A CA 532449DA CA 532449 A CA532449 A CA 532449A
Authority
CA
Canada
Prior art keywords
telephone systems
automatic telephone
automatic
systems
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
CA532449A
Other languages
French (fr)
Inventor
E. Lomax Clarence
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.)
Nortel Networks Ltd
Original Assignee
Northern Electric Co Ltd
Publication date
Application granted granted Critical
Publication of CA532449A publication Critical patent/CA532449A/en
Expired legal-status Critical Current

Links

CA532449A Automatic telephone systems Expired CA532449A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA532449T

Publications (1)

Publication Number Publication Date
CA532449A true CA532449A (en) 1956-10-30

Family

ID=35687062

Family Applications (1)

Application Number Title Priority Date Filing Date
CA532449A Expired CA532449A (en) Automatic telephone systems

Country Status (1)

Country Link
CA (1) CA532449A (en)

Similar Documents

Publication Publication Date Title
CA532449A (en) Automatic telephone systems
CA524054A (en) Automatic telephone systems
CA521518A (en) Automatic telephone system
CA523499A (en) Automatic telephone system
CA525903A (en) Automatic telephone system
CA526324A (en) Relay automatic telephone systems
CA521394A (en) Telephone systems
CA521856A (en) Telephone systems
CA522332A (en) Telephone systems
CA524594A (en) Telephone systems
CA524631A (en) Telephone systems
CA525662A (en) Telephone systems
CA530739A (en) Telephone systems
CA533592A (en) Telephone systems
CA548744A (en) Automatic telephone systems
CA526554A (en) Automatic telephone systems of the step-by-step type
CA530442A (en) Telecommunication systems
CA532978A (en) Telecommunication systems
CA530322A (en) Automatic telephone-exchange systems
CA530323A (en) Automatic telephone-exchange systems
CA543973A (en) Automatic telephone system
CA521241A (en) Relay automatic telephone system
CA520819A (en) Automatic potential-control system
CA533984A (en) Telephone system
CA527080A (en) Telephone answering systems