CA778872A - Automatic telephone exchange systems - Google Patents

Automatic telephone exchange systems

Info

Publication number
CA778872A
CA778872A CA778872A CA778872DA CA778872A CA 778872 A CA778872 A CA 778872A CA 778872 A CA778872 A CA 778872A CA 778872D A CA778872D A CA 778872DA CA 778872 A CA778872 A CA 778872A
Authority
CA
Canada
Prior art keywords
telephone exchange
automatic telephone
exchange systems
systems
automatic
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
CA778872A
Inventor
J. Warman Bloomfield
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.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical Industries Ltd
Publication date
Application granted granted Critical
Publication of CA778872A publication Critical patent/CA778872A/en
Expired legal-status Critical Current

Links

CA778872A Automatic telephone exchange systems Expired CA778872A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA778872T

Publications (1)

Publication Number Publication Date
CA778872A true CA778872A (en) 1968-02-20

Family

ID=36226186

Family Applications (1)

Application Number Title Priority Date Filing Date
CA778872A Expired CA778872A (en) Automatic telephone exchange systems

Country Status (1)

Country Link
CA (1) CA778872A (en)

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