CA641558A - Telephone signaling system - Google Patents

Telephone signaling system

Info

Publication number
CA641558A
CA641558A CA641558A CA641558DA CA641558A CA 641558 A CA641558 A CA 641558A CA 641558 A CA641558 A CA 641558A CA 641558D A CA641558D A CA 641558DA CA 641558 A CA641558 A CA 641558A
Authority
CA
Canada
Prior art keywords
signaling system
telephone signaling
telephone
signaling
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
CA641558A
Inventor
F. Schmidt George
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
Publication date
Application granted granted Critical
Publication of CA641558A publication Critical patent/CA641558A/en
Expired legal-status Critical Current

Links

CA641558A Telephone signaling system Expired CA641558A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA641558T

Publications (1)

Publication Number Publication Date
CA641558A true CA641558A (en) 1962-05-22

Family

ID=35920076

Family Applications (1)

Application Number Title Priority Date Filing Date
CA641558A Expired CA641558A (en) Telephone signaling system

Country Status (1)

Country Link
CA (1) CA641558A (en)

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