CA464612A - Telephone or like signalling system - Google Patents

Telephone or like signalling system

Info

Publication number
CA464612A
CA464612A CA464612A CA464612DA CA464612A CA 464612 A CA464612 A CA 464612A CA 464612 A CA464612 A CA 464612A CA 464612D A CA464612D A CA 464612DA CA 464612 A CA464612 A CA 464612A
Authority
CA
Canada
Prior art keywords
telephone
signalling system
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
CA464612A
Other languages
French (fr)
Inventor
Edmund Beale Charles
Gillings Charles
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.)
Automatic Telephone and Electric Co Ltd
Original Assignee
Automatic Telephone and Electric Co Ltd
Publication date
Application granted granted Critical
Publication of CA464612A publication Critical patent/CA464612A/en
Expired legal-status Critical Current

Links

CA464612A Telephone or like signalling system Expired CA464612A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA464612T

Publications (1)

Publication Number Publication Date
CA464612A true CA464612A (en) 1950-04-25

Family

ID=35594341

Family Applications (1)

Application Number Title Priority Date Filing Date
CA464612A Expired CA464612A (en) Telephone or like signalling system

Country Status (1)

Country Link
CA (1) CA464612A (en)

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