CA78165A - Systeme de signal d'echange de telephone - Google Patents

Systeme de signal d'echange de telephone

Info

Publication number
CA78165A
CA78165A CA000078165A CA78165DA CA78165A CA 78165 A CA78165 A CA 78165A CA 000078165 A CA000078165 A CA 000078165A CA 78165D A CA78165D A CA 78165DA CA 78165 A CA78165 A CA 78165A
Authority
CA
Canada
Prior art keywords
signal system
telephone exchange
exchange signal
telephone
signal
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
CA000078165A
Other languages
English (en)
Inventor
James Lawrence Mcquarie
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 CA78165A publication Critical patent/CA78165A/fr
Expired legal-status Critical Current

Links

CA000078165A 1902-03-05 1902-03-05 Systeme de signal d'echange de telephone Expired CA78165A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA78165T 1902-03-05

Publications (1)

Publication Number Publication Date
CA78165A true CA78165A (fr) 1902-11-11

Family

ID=45194701

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000078165A Expired CA78165A (fr) 1902-03-05 1902-03-05 Systeme de signal d'echange de telephone

Country Status (1)

Country Link
CA (1) CA78165A (fr)

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