CA566172A - Telephone systems - Google Patents

Telephone systems

Info

Publication number
CA566172A
CA566172A CA566172A CA566172DA CA566172A CA 566172 A CA566172 A CA 566172A CA 566172 A CA566172 A CA 566172A CA 566172D A CA566172D A CA 566172DA CA 566172 A CA566172 A CA 566172A
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
CA566172A
Other languages
French (fr)
Inventor
P. Long Douglas
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.)
Siemens Brothers and Co Ltd
Original Assignee
Siemens Brothers and Co Ltd
Publication date
Application granted granted Critical
Publication of CA566172A publication Critical patent/CA566172A/en
Expired legal-status Critical Current

Links

CA566172A Telephone systems Expired CA566172A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA566172T

Publications (1)

Publication Number Publication Date
CA566172A true CA566172A (en) 1958-11-18

Family

ID=35738686

Family Applications (1)

Application Number Title Priority Date Filing Date
CA566172A Expired CA566172A (en) Telephone systems

Country Status (1)

Country Link
CA (1) CA566172A (en)

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