CA174327A - Systeme d'echange telephonique - Google Patents

Systeme d'echange telephonique

Info

Publication number
CA174327A
CA174327A CA000174327A CA174327DA CA174327A CA 174327 A CA174327 A CA 174327A CA 000174327 A CA000174327 A CA 000174327A CA 174327D A CA174327D A CA 174327DA CA 174327 A CA174327 A CA 174327A
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
CA000174327A
Other languages
English (en)
Inventor
Nils G. Palmgren
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.)
Relay Automatic Telephone Company Ltd
Original Assignee
Relay Automatic Telephone Company Ltd
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 Relay Automatic Telephone Company Ltd filed Critical Relay Automatic Telephone Company Ltd
Application granted granted Critical
Publication of CA174327A publication Critical patent/CA174327A/fr
Expired legal-status Critical Current

Links

CA000174327A 1916-05-25 1916-05-25 Systeme d'echange telephonique Expired CA174327A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA174327T 1916-05-25

Publications (1)

Publication Number Publication Date
CA174327A true CA174327A (fr) 1917-01-02

Family

ID=45293980

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000174327A Expired CA174327A (fr) 1916-05-25 1916-05-25 Systeme d'echange telephonique

Country Status (1)

Country Link
CA (1) CA174327A (fr)

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