CA770231A - Automatic telephone exchange systems - Google Patents

Automatic telephone exchange systems

Info

Publication number
CA770231A
CA770231A CA770231A CA770231DA CA770231A CA 770231 A CA770231 A CA 770231A CA 770231 A CA770231 A CA 770231A CA 770231D A CA770231D A CA 770231DA CA 770231 A CA770231 A CA 770231A
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
CA770231A
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 CA770231A publication Critical patent/CA770231A/en
Expired legal-status Critical Current

Links

CA770231A Automatic telephone exchange systems Expired CA770231A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA770231T

Publications (1)

Publication Number Publication Date
CA770231A true CA770231A (en) 1967-10-24

Family

ID=36213635

Family Applications (1)

Application Number Title Priority Date Filing Date
CA770231A Expired CA770231A (en) Automatic telephone exchange systems

Country Status (1)

Country Link
CA (1) CA770231A (en)

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