CA363799A - Telephone signalling system - Google Patents

Telephone signalling system

Info

Publication number
CA363799A
CA363799A CA363799A CA363799DA CA363799A CA 363799 A CA363799 A CA 363799A CA 363799 A CA363799 A CA 363799A CA 363799D A CA363799D A CA 363799DA CA 363799 A CA363799 A CA 363799A
Authority
CA
Canada
Prior art keywords
signalling system
telephone signalling
telephone
signalling
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
CA363799A
Other languages
French (fr)
Inventor
E. Woodruff Albert
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.)
Associated Electric Laboratories Inc
Original Assignee
Associated Electric Laboratories Inc
Publication date
Application granted granted Critical
Publication of CA363799A publication Critical patent/CA363799A/en
Expired legal-status Critical Current

Links

CA363799A Telephone signalling system Expired CA363799A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA363799T

Publications (1)

Publication Number Publication Date
CA363799A true CA363799A (en) 1937-02-02

Family

ID=35363137

Family Applications (1)

Application Number Title Priority Date Filing Date
CA363799A Expired CA363799A (en) Telephone signalling system

Country Status (1)

Country Link
CA (1) CA363799A (en)

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