CA134181A - Echange telephonique a fils doubles - Google Patents

Echange telephonique a fils doubles

Info

Publication number
CA134181A
CA134181A CA000134181A CA134181DA CA134181A CA 134181 A CA134181 A CA 134181A CA 000134181 A CA000134181 A CA 000134181A CA 134181D A CA134181D A CA 134181DA CA 134181 A CA134181 A CA 134181A
Authority
CA
Canada
Prior art keywords
telephone
double wire
systems
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
CA000134181A
Other languages
English (en)
Inventor
Gotthulf Ansgarius Betulander
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of CA134181A publication Critical patent/CA134181A/fr
Expired legal-status Critical Current

Links

CA000134181A 1911-01-16 1911-01-16 Echange telephonique a fils doubles Expired CA134181A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA134181T 1911-01-16

Publications (1)

Publication Number Publication Date
CA134181A true CA134181A (fr) 1911-07-04

Family

ID=45253901

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000134181A Expired CA134181A (fr) 1911-01-16 1911-01-16 Echange telephonique a fils doubles

Country Status (1)

Country Link
CA (1) CA134181A (fr)

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