CA299411A - Systeme de central telephonique - Google Patents

Systeme de central telephonique

Info

Publication number
CA299411A
CA299411A CA299411A CA299411DA CA299411A CA 299411 A CA299411 A CA 299411A CA 299411 A CA299411 A CA 299411A CA 299411D A CA299411D A CA 299411DA CA 299411 A CA299411 A CA 299411A
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
CA299411A
Other languages
English (en)
Inventor
Pond Coggins Paul
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 CA299411A publication Critical patent/CA299411A/fr
Expired legal-status Critical Current

Links

CA299411A Systeme de central telephonique Expired CA299411A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA299411T

Publications (1)

Publication Number Publication Date
CA299411A true CA299411A (fr) 1930-04-15

Family

ID=35236730

Family Applications (1)

Application Number Title Priority Date Filing Date
CA299411A Expired CA299411A (fr) Systeme de central telephonique

Country Status (1)

Country Link
CA (1) CA299411A (fr)

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