CA236894A - Substation telephone circuit - Google Patents

Substation telephone circuit

Info

Publication number
CA236894A
CA236894A CA236894A CA236894DA CA236894A CA 236894 A CA236894 A CA 236894A CA 236894 A CA236894 A CA 236894A CA 236894D A CA236894D A CA 236894DA CA 236894 A CA236894 A CA 236894A
Authority
CA
Canada
Prior art keywords
telephone circuit
substation telephone
substation
circuit
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
CA236894A
Other languages
French (fr)
Inventor
G. Martin Talbot
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 CA236894A publication Critical patent/CA236894A/en
Expired legal-status Critical Current

Links

CA236894A Substation telephone circuit Expired CA236894A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA236894T

Publications (1)

Publication Number Publication Date
CA236894A true CA236894A (en) 1924-01-08

Family

ID=35140923

Family Applications (1)

Application Number Title Priority Date Filing Date
CA236894A Expired CA236894A (en) Substation telephone circuit

Country Status (1)

Country Link
CA (1) CA236894A (en)

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