CA74423A - Signal de telephone - Google Patents

Signal de telephone

Info

Publication number
CA74423A
CA74423A CA000074423A CA74423DA CA74423A CA 74423 A CA74423 A CA 74423A CA 000074423 A CA000074423 A CA 000074423A CA 74423D A CA74423D A CA 74423DA CA 74423 A CA74423 A CA 74423A
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
CA000074423A
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 CA74423A publication Critical patent/CA74423A/fr
Expired legal-status Critical Current

Links

CA000074423A 1899-04-20 1899-04-20 Signal de telephone Expired CA74423A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA74423T 1899-04-20

Publications (1)

Publication Number Publication Date
CA74423A true CA74423A (fr) 1902-01-14

Family

ID=45190959

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000074423A Expired CA74423A (fr) 1899-04-20 1899-04-20 Signal de telephone

Country Status (1)

Country Link
CA (1) CA74423A (fr)

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