CA236647A - Relay telephone system - Google Patents

Relay telephone system

Info

Publication number
CA236647A
CA236647A CA236647A CA236647DA CA236647A CA 236647 A CA236647 A CA 236647A CA 236647 A CA236647 A CA 236647A CA 236647D A CA236647D A CA 236647DA CA 236647 A CA236647 A CA 236647A
Authority
CA
Canada
Prior art keywords
telephone system
relay telephone
relay
telephone
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
CA236647A
Other languages
French (fr)
Inventor
G. Richardson Rodney
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.)
Nortel Networks Ltd
Original Assignee
Northern Electric Co Ltd
Publication date
Application granted granted Critical
Publication of CA236647A publication Critical patent/CA236647A/en
Expired legal-status Critical Current

Links

CA236647A Relay telephone system Expired CA236647A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA236647T

Publications (1)

Publication Number Publication Date
CA236647A true CA236647A (en) 1923-12-25

Family

ID=35134021

Family Applications (1)

Application Number Title Priority Date Filing Date
CA236647A Expired CA236647A (en) Relay telephone system

Country Status (1)

Country Link
CA (1) CA236647A (en)

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