CA451431A - Telephone or like signalling system - Google Patents

Telephone or like signalling system

Info

Publication number
CA451431A
CA451431A CA451431A CA451431DA CA451431A CA 451431 A CA451431 A CA 451431A CA 451431 A CA451431 A CA 451431A CA 451431D A CA451431D A CA 451431DA CA 451431 A CA451431 A CA 451431A
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
CA451431A
Other languages
French (fr)
Inventor
Taylor Reginald
Thomas Baker 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.)
Automatic Telephone and Electric Co Ltd
Original Assignee
Automatic Telephone and Electric Co Ltd
Publication date
Application granted granted Critical
Publication of CA451431A publication Critical patent/CA451431A/en
Expired legal-status Critical Current

Links

CA451431A Telephone or like signalling system Expired CA451431A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA451431T

Publications (1)

Publication Number Publication Date
CA451431A true CA451431A (en) 1948-09-28

Family

ID=35569157

Family Applications (1)

Application Number Title Priority Date Filing Date
CA451431A Expired CA451431A (en) Telephone or like signalling system

Country Status (1)

Country Link
CA (1) CA451431A (en)

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