CA74241A - Signal de telephone - Google Patents

Signal de telephone

Info

Publication number
CA74241A
CA74241A CA000074241A CA74241DA CA74241A CA 74241 A CA74241 A CA 74241A CA 000074241 A CA000074241 A CA 000074241A CA 74241D A CA74241D A CA 74241DA CA 74241 A CA74241 A CA 74241A
Authority
CA
Canada
Prior art keywords
telephone 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
CA000074241A
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 CA74241A publication Critical patent/CA74241A/fr
Expired legal-status Critical Current

Links

CA000074241A 1897-12-23 1897-12-23 Signal de telephone Expired CA74241A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA74241T 1897-12-23

Publications (1)

Publication Number Publication Date
CA74241A true CA74241A (fr) 1901-12-24

Family

ID=45190777

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000074241A Expired CA74241A (fr) 1897-12-23 1897-12-23 Signal de telephone

Country Status (1)

Country Link
CA (1) CA74241A (fr)

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