CA278989A - Systeme de signalisation - Google Patents

Systeme de signalisation

Info

Publication number
CA278989A
CA278989A CA278989A CA278989DA CA278989A CA 278989 A CA278989 A CA 278989A CA 278989 A CA278989 A CA 278989A CA 278989D A CA278989D A CA 278989DA CA 278989 A CA278989 A CA 278989A
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
CA278989A
Other languages
English (en)
Inventor
M. Curtis Austen
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
Publication date
Application granted granted Critical
Publication of CA278989A publication Critical patent/CA278989A/fr
Expired legal-status Critical Current

Links

CA278989A Systeme de signalisation Expired CA278989A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA278989T

Publications (1)

Publication Number Publication Date
CA278989A true CA278989A (fr) 1928-03-27

Family

ID=35212081

Family Applications (1)

Application Number Title Priority Date Filing Date
CA278989A Expired CA278989A (fr) Systeme de signalisation

Country Status (1)

Country Link
CA (1) CA278989A (fr)

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