CA687558A - Telephone systems - Google Patents

Telephone systems

Info

Publication number
CA687558A
CA687558A CA687558A CA687558DA CA687558A CA 687558 A CA687558 A CA 687558A CA 687558 A CA687558 A CA 687558A CA 687558D A CA687558D A CA 687558DA CA 687558 A CA687558 A CA 687558A
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
CA687558A
Inventor
Drake Bernard
D. H. Beck Kenneth
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 CA687558A publication Critical patent/CA687558A/en
Expired legal-status Critical Current

Links

CA687558A Telephone systems Expired CA687558A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA687558T

Publications (1)

Publication Number Publication Date
CA687558A true CA687558A (en) 1964-05-26

Family

ID=35990170

Family Applications (1)

Application Number Title Priority Date Filing Date
CA687558A Expired CA687558A (en) Telephone systems

Country Status (1)

Country Link
CA (1) CA687558A (en)

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