CA581156A - Telephone systems - Google Patents

Telephone systems

Info

Publication number
CA581156A
CA581156A CA581156A CA581156DA CA581156A CA 581156 A CA581156 A CA 581156A CA 581156 A CA581156 A CA 581156A CA 581156D A CA581156D A CA 581156DA CA 581156 A CA581156 A CA 581156A
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
CA581156A
Other languages
French (fr)
Inventor
D. Allum Robin
F. Denby James
G. Pearce James
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.)
Automatic Telephone and Electric Co Ltd
Original Assignee
Automatic Telephone and Electric Co Ltd
Publication date
Application granted granted Critical
Publication of CA581156A publication Critical patent/CA581156A/en
Expired legal-status Critical Current

Links

CA581156A Telephone systems Expired CA581156A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA581156T

Publications (1)

Publication Number Publication Date
CA581156A true CA581156A (en) 1959-08-11

Family

ID=35760581

Family Applications (1)

Application Number Title Priority Date Filing Date
CA581156A Expired CA581156A (en) Telephone systems

Country Status (1)

Country Link
CA (1) CA581156A (en)

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