CA172219A - Signal telephonique - Google Patents

Signal telephonique

Info

Publication number
CA172219A
CA172219A CA000172219A CA172219DA CA172219A CA 172219 A CA172219 A CA 172219A CA 000172219 A CA000172219 A CA 000172219A CA 172219D A CA172219D A CA 172219DA CA 172219 A CA172219 A CA 172219A
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
CA000172219A
Other languages
English (en)
Inventor
Oliver H. Tracy
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of CA172219A publication Critical patent/CA172219A/fr
Expired legal-status Critical Current

Links

CA000172219A 1916-07-26 1916-07-26 Signal telephonique Expired CA172219A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA172219T 1916-07-26

Publications (1)

Publication Number Publication Date
CA172219A true CA172219A (fr) 1916-10-03

Family

ID=45291874

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000172219A Expired CA172219A (fr) 1916-07-26 1916-07-26 Signal telephonique

Country Status (1)

Country Link
CA (1) CA172219A (fr)

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