CA173704A - Systeme d'echange telephonique - Google Patents

Systeme d'echange telephonique

Info

Publication number
CA173704A
CA173704A CA000173704A CA173704DA CA173704A CA 173704 A CA173704 A CA 173704A CA 000173704 A CA000173704 A CA 000173704A CA 173704D A CA173704D A CA 173704DA CA 173704 A CA173704 A CA 173704A
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
CA000173704A
Other languages
English (en)
Inventor
Western Electric Company The
Frank Robert Mcberty
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc
Application granted granted Critical
Publication of CA173704A publication Critical patent/CA173704A/fr
Expired legal-status Critical Current

Links

CA000173704A 1917-01-01 1917-01-01 Systeme d'echange telephonique Expired CA173704A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA173704T 1917-01-01

Publications (1)

Publication Number Publication Date
CA173704A true CA173704A (fr) 1917-02-01

Family

ID=45293357

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000173704A Expired CA173704A (fr) 1917-01-01 1917-01-01 Systeme d'echange telephonique

Country Status (1)

Country Link
CA (1) CA173704A (fr)

Similar Documents

Publication Publication Date Title
CA181124A (fr) Systeme telephonique
CA187344A (fr) Systeme d'echange telephonique
CA173704A (fr) Systeme d'echange telephonique
CA177248A (fr) Systeme d'echange telephonique
CA182429A (fr) Exchange telephonique
CA182585A (fr) Systeme d'echange telephonique
CA182586A (fr) Systeme d'echange telephonique
CA182588A (fr) Systeme d'echange telephonique
CA182758A (fr) Systeme d'echange telephonique
CA183517A (fr) Systeme d'echange telephonique
CA185169A (fr) Systeme d'echange telephonique
CA185565A (fr) Systeme d'echange telephonique
CA185566A (fr) Systeme d'echange telephonique
CA185873A (fr) Echange telephonique
CA185874A (fr) Systeme d'echange telephonique
CA186088A (fr) Systeme d'echange telephonique
CA186835A (fr) Systeme d'echange telephonique
CA186929A (fr) Systeme d'echange telephonique
CA187175A (fr) Systeme d'echange telephonique
CA187551A (fr) Systeme d'echange telephonique
CA188287A (fr) Systeme d'echange telephonique
CA189211A (fr) Systeme d'echange telephonique
CA185878A (fr) Echange telephonique
CA177357A (fr) Systeme telephonique
CA179339A (fr) Systeme telephonique