CA169170A - Systeme de signaux telephoniques - Google Patents

Systeme de signaux telephoniques

Info

Publication number
CA169170A
CA169170A CA000169170A CA169170DA CA169170A CA 169170 A CA169170 A CA 169170A CA 000169170 A CA000169170 A CA 000169170A CA 169170D A CA169170D A CA 169170DA CA 169170 A CA169170 A CA 169170A
Authority
CA
Canada
Prior art keywords
signal system
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
CA000169170A
Other languages
English (en)
Inventor
Samuel Harrison Everett
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Application granted granted Critical
Publication of CA169170A publication Critical patent/CA169170A/fr
Expired legal-status Critical Current

Links

CA000169170A 1915-04-03 1915-04-03 Systeme de signaux telephoniques Expired CA169170A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA169170T 1915-04-03

Publications (1)

Publication Number Publication Date
CA169170A true CA169170A (fr) 1916-05-02

Family

ID=45288834

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000169170A Expired CA169170A (fr) 1915-04-03 1915-04-03 Systeme de signaux telephoniques

Country Status (1)

Country Link
CA (1) CA169170A (fr)

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