CA450957A - Systeme de signalisation - Google Patents

Systeme de signalisation

Info

Publication number
CA450957A
CA450957A CA450957A CA450957DA CA450957A CA 450957 A CA450957 A CA 450957A CA 450957 A CA450957 A CA 450957A CA 450957D A CA450957D A CA 450957DA CA 450957 A CA450957 A CA 450957A
Authority
CA
Canada
Prior art keywords
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
CA450957A
Other languages
English (en)
Inventor
J. Bowne Langford
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
Bell Telephone Laboratories Inc
Publication date
Application granted granted Critical
Publication of CA450957A publication Critical patent/CA450957A/fr
Expired legal-status Critical Current

Links

CA450957A Systeme de signalisation Expired CA450957A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA450957T

Publications (1)

Publication Number Publication Date
CA450957A true CA450957A (fr) 1948-08-31

Family

ID=35568678

Family Applications (1)

Application Number Title Priority Date Filing Date
CA450957A Expired CA450957A (fr) Systeme de signalisation

Country Status (1)

Country Link
CA (1) CA450957A (fr)

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