CA451430A - Telephone or like signalling system - Google Patents

Telephone or like signalling system

Info

Publication number
CA451430A
CA451430A CA451430A CA451430DA CA451430A CA 451430 A CA451430 A CA 451430A CA 451430 A CA451430 A CA 451430A CA 451430D A CA451430D A CA 451430DA CA 451430 A CA451430 A CA 451430A
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
CA451430A
Other languages
French (fr)
Inventor
Edmund Beale Charles
Bruno Dante Terroni Teseo
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 CA451430A publication Critical patent/CA451430A/en
Expired legal-status Critical Current

Links

CA451430A Telephone or like signalling system Expired CA451430A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA451430T

Publications (1)

Publication Number Publication Date
CA451430A true CA451430A (en) 1948-09-28

Family

ID=35569156

Family Applications (1)

Application Number Title Priority Date Filing Date
CA451430A Expired CA451430A (en) Telephone or like signalling system

Country Status (1)

Country Link
CA (1) CA451430A (en)

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