CA53457A - Appareil de signal pour echange de telephone - Google Patents

Appareil de signal pour echange de telephone

Info

Publication number
CA53457A
CA53457A CA000053457A CA53457DA CA53457A CA 53457 A CA53457 A CA 53457A CA 000053457 A CA000053457 A CA 000053457A CA 53457D A CA53457D A CA 53457DA CA 53457 A CA53457 A CA 53457A
Authority
CA
Canada
Prior art keywords
telephone switch
switch boards
signalling apparatus
signalling
boards
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
CA000053457A
Other languages
English (en)
Inventor
Charles Ezra Scribner
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.)
Bell Telephone Company of Canada
Original Assignee
Bell Telephone Company of Canada
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 Bell Telephone Company of Canada filed Critical Bell Telephone Company of Canada
Application granted granted Critical
Publication of CA53457A publication Critical patent/CA53457A/fr
Expired legal-status Critical Current

Links

CA000053457A 1896-04-08 1896-04-08 Appareil de signal pour echange de telephone Expired CA53457A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA53457T 1896-04-08

Publications (1)

Publication Number Publication Date
CA53457A true CA53457A (fr) 1896-09-11

Family

ID=45169996

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000053457A Expired CA53457A (fr) 1896-04-08 1896-04-08 Appareil de signal pour echange de telephone

Country Status (1)

Country Link
CA (1) CA53457A (fr)

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