CA196961A - Systeme d'echange d'appels de telephone mecanique - Google Patents

Systeme d'echange d'appels de telephone mecanique

Info

Publication number
CA196961A
CA196961A CA196961A CA196961DA CA196961A CA 196961 A CA196961 A CA 196961A CA 196961 A CA196961 A CA 196961A CA 196961D A CA196961D A CA 196961DA CA 196961 A CA196961 A CA 196961A
Authority
CA
Canada
Prior art keywords
exchange system
telephone switching
switching exchange
machine telephone
machine
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
CA196961A
Other languages
English (en)
Inventor
R. Mcberty Frank
Polinkowsky Lipa
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
Publication date
Application granted granted Critical
Publication of CA196961A publication Critical patent/CA196961A/fr
Expired legal-status Critical Current

Links

CA196961A Systeme d'echange d'appels de telephone mecanique Expired CA196961A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA196961T

Publications (1)

Publication Number Publication Date
CA196961A true CA196961A (fr) 1920-02-03

Family

ID=35071399

Family Applications (1)

Application Number Title Priority Date Filing Date
CA196961A Expired CA196961A (fr) Systeme d'echange d'appels de telephone mecanique

Country Status (1)

Country Link
CA (1) CA196961A (fr)

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