CA68933A - Signal pour echange de telephone - Google Patents

Signal pour echange de telephone

Info

Publication number
CA68933A
CA68933A CA000068933A CA68933DA CA68933A CA 68933 A CA68933 A CA 68933A CA 000068933 A CA000068933 A CA 000068933A CA 68933D A CA68933D A CA 68933DA CA 68933 A CA68933 A CA 68933A
Authority
CA
Canada
Prior art keywords
telephone switchboard
switchboard signal
signal
telephone
switchboard
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
CA000068933A
Other languages
English (en)
Inventor
Frank Robert Mcberty
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 CA68933A publication Critical patent/CA68933A/fr
Expired legal-status Critical Current

Links

CA000068933A 1898-05-17 1898-05-17 Signal pour echange de telephone Expired CA68933A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA68933T 1898-05-17

Publications (1)

Publication Number Publication Date
CA68933A true CA68933A (fr) 1900-10-08

Family

ID=45185471

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000068933A Expired CA68933A (fr) 1898-05-17 1898-05-17 Signal pour echange de telephone

Country Status (1)

Country Link
CA (1) CA68933A (fr)

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