CA252192A - Instrument telephonique de sous-station - Google Patents

Instrument telephonique de sous-station

Info

Publication number
CA252192A
CA252192A CA252192A CA252192DA CA252192A CA 252192 A CA252192 A CA 252192A CA 252192 A CA252192 A CA 252192A CA 252192D A CA252192D A CA 252192DA CA 252192 A CA252192 A CA 252192A
Authority
CA
Canada
Prior art keywords
telephone instrument
substation telephone
substation
instrument
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
CA252192A
Other languages
English (en)
Inventor
Erickson John
F. Obergfell Herbert
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 CA252192A publication Critical patent/CA252192A/fr
Expired legal-status Critical Current

Links

CA252192A Instrument telephonique de sous-station Expired CA252192A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA252192T

Publications (1)

Publication Number Publication Date
CA252192A true CA252192A (fr) 1925-07-28

Family

ID=35159166

Family Applications (1)

Application Number Title Priority Date Filing Date
CA252192A Expired CA252192A (fr) Instrument telephonique de sous-station

Country Status (1)

Country Link
CA (1) CA252192A (fr)

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