CA443406A - Systeme de signalisation pour telephone - Google Patents

Systeme de signalisation pour telephone

Info

Publication number
CA443406A
CA443406A CA443406A CA443406DA CA443406A CA 443406 A CA443406 A CA 443406A CA 443406 A CA443406 A CA 443406A CA 443406D A CA443406D A CA 443406DA CA 443406 A CA443406 A CA 443406A
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
CA443406A
Other languages
English (en)
Inventor
Gillings Charles
Edmund Beale 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 CA443406A publication Critical patent/CA443406A/fr
Expired legal-status Critical Current

Links

CA443406A Systeme de signalisation pour telephone Expired CA443406A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA443406T

Publications (1)

Publication Number Publication Date
CA443406A true CA443406A (fr) 1947-08-05

Family

ID=35558633

Family Applications (1)

Application Number Title Priority Date Filing Date
CA443406A Expired CA443406A (fr) Systeme de signalisation pour telephone

Country Status (1)

Country Link
CA (1) CA443406A (fr)

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