CA209112A - Circuit de sous-station telephonique - Google Patents

Circuit de sous-station telephonique

Info

Publication number
CA209112A
CA209112A CA209112A CA209112DA CA209112A CA 209112 A CA209112 A CA 209112A CA 209112 A CA209112 A CA 209112A CA 209112D A CA209112D A CA 209112DA CA 209112 A CA209112 A CA 209112A
Authority
CA
Canada
Prior art keywords
substation circuit
tone
tone substation
circuit
substation
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
CA209112A
Other languages
English (en)
Inventor
D. Edwards George
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.)
INTERNATIONAL WESTERN ELECTRIC CO
Original Assignee
INTERNATIONAL WESTERN ELECTRIC CO
Publication date
Application granted granted Critical
Publication of CA209112A publication Critical patent/CA209112A/fr
Expired legal-status Critical Current

Links

CA209112A Circuit de sous-station telephonique Expired CA209112A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA209112T

Publications (1)

Publication Number Publication Date
CA209112A true CA209112A (fr) 1921-03-01

Family

ID=35102891

Family Applications (1)

Application Number Title Priority Date Filing Date
CA209112A Expired CA209112A (fr) Circuit de sous-station telephonique

Country Status (1)

Country Link
CA (1) CA209112A (fr)

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