CA678425A - Automatic telephone exchanges - Google Patents

Automatic telephone exchanges

Info

Publication number
CA678425A
CA678425A CA678425A CA678425DA CA678425A CA 678425 A CA678425 A CA 678425A CA 678425 A CA678425 A CA 678425A CA 678425D A CA678425D A CA 678425DA CA 678425 A CA678425 A CA 678425A
Authority
CA
Canada
Prior art keywords
automatic telephone
telephone exchanges
exchanges
automatic
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
CA678425A
Inventor
H. Bray Frederick
M. Ridler 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.)
Standard Telephone and Cables Manufacturing Canada Ltd
Original Assignee
Standard Telephone and Cables Manufacturing Canada Ltd
Publication date
Application granted granted Critical
Publication of CA678425A publication Critical patent/CA678425A/en
Expired legal-status Critical Current

Links

CA678425A Automatic telephone exchanges Expired CA678425A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA678425T

Publications (1)

Publication Number Publication Date
CA678425A true CA678425A (en) 1964-01-21

Family

ID=35979513

Family Applications (1)

Application Number Title Priority Date Filing Date
CA678425A Expired CA678425A (en) Automatic telephone exchanges

Country Status (1)

Country Link
CA (1) CA678425A (en)

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