CA285584A - Systeme de signalisation electrique - Google Patents

Systeme de signalisation electrique

Info

Publication number
CA285584A
CA285584A CA285584A CA285584DA CA285584A CA 285584 A CA285584 A CA 285584A CA 285584 A CA285584 A CA 285584A CA 285584D A CA285584D A CA 285584DA CA 285584 A CA285584 A CA 285584A
Authority
CA
Canada
Prior art keywords
signalling system
electric signalling
electric
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
CA285584A
Other languages
English (en)
Inventor
A. Phelps Walter
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 CA285584A publication Critical patent/CA285584A/fr
Expired legal-status Critical Current

Links

CA285584A Systeme de signalisation electrique Expired CA285584A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA285584T

Publications (1)

Publication Number Publication Date
CA285584A true CA285584A (fr) 1928-12-11

Family

ID=35222397

Family Applications (1)

Application Number Title Priority Date Filing Date
CA285584A Expired CA285584A (fr) Systeme de signalisation electrique

Country Status (1)

Country Link
CA (1) CA285584A (fr)

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