CA277227A - Systeme de central telephonique - Google Patents

Systeme de central telephonique

Info

Publication number
CA277227A
CA277227A CA277227A CA277227DA CA277227A CA 277227 A CA277227 A CA 277227A CA 277227 A CA277227 A CA 277227A CA 277227D A CA277227D A CA 277227DA CA 277227 A CA277227 A CA 277227A
Authority
CA
Canada
Prior art keywords
exchange system
telephone exchange
telephone
exchange
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
CA277227A
Other languages
English (en)
Inventor
Samuel B. Williams, Jr.
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
AT&T Corp
Original Assignee
INTERNATIONAL WESTERN ELECTRIC Co
Western Electric Co Inc
Publication date
Application granted granted Critical
Publication of CA277227A publication Critical patent/CA277227A/fr
Expired legal-status Critical Current

Links

CA277227A Systeme de central telephonique Expired CA277227A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA277227T

Publications (1)

Publication Number Publication Date
CA277227A true CA277227A (fr) 1928-01-17

Family

ID=35210318

Family Applications (1)

Application Number Title Priority Date Filing Date
CA277227A Expired CA277227A (fr) Systeme de central telephonique

Country Status (1)

Country Link
CA (1) CA277227A (fr)

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