CA837231A - Telephone systems - Google Patents

Telephone systems

Info

Publication number
CA837231A
CA837231A CA837231A CA837231DA CA837231A CA 837231 A CA837231 A CA 837231A CA 837231 A CA837231 A CA 837231A CA 837231D A CA837231D A CA 837231DA CA 837231 A CA837231 A CA 837231A
Authority
CA
Canada
Prior art keywords
telephone systems
telephone
systems
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
CA837231A
Inventor
H. Rees Frederick
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.)
ITT Canada Ltd
Original Assignee
ITT Canada Ltd
Publication date
Application granted granted Critical
Publication of CA837231A publication Critical patent/CA837231A/en
Expired legal-status Critical Current

Links

CA837231A Telephone systems Expired CA837231A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA837231T

Publications (1)

Publication Number Publication Date
CA837231A true CA837231A (en) 1970-03-17

Family

ID=36321425

Family Applications (1)

Application Number Title Priority Date Filing Date
CA837231A Expired CA837231A (en) Telephone systems

Country Status (1)

Country Link
CA (1) CA837231A (en)

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