CA849110A - Telephone exchanges - Google Patents

Telephone exchanges

Info

Publication number
CA849110A
CA849110A CA849110A CA849110DA CA849110A CA 849110 A CA849110 A CA 849110A CA 849110 A CA849110 A CA 849110A CA 849110D A CA849110D A CA 849110DA CA 849110 A CA849110 A CA 849110A
Authority
CA
Canada
Prior art keywords
telephone exchanges
exchanges
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
CA849110A
Inventor
A. W. Butcher 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.)
International Telephone and Telegraph Corp
Original Assignee
International Telephone and Telegraph Corp
Publication date
Application granted granted Critical
Publication of CA849110A publication Critical patent/CA849110A/en
Expired legal-status Critical Current

Links

CA849110A Telephone exchanges Expired CA849110A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA849110T

Publications (1)

Publication Number Publication Date
CA849110A true CA849110A (en) 1970-08-11

Family

ID=36333312

Family Applications (1)

Application Number Title Priority Date Filing Date
CA849110A Expired CA849110A (en) Telephone exchanges

Country Status (1)

Country Link
CA (1) CA849110A (en)

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