CA499772A - Systemes de signalisation - Google Patents

Systemes de signalisation

Info

Publication number
CA499772A
CA499772A CA499772A CA499772DA CA499772A CA 499772 A CA499772 A CA 499772A CA 499772 A CA499772 A CA 499772A CA 499772D A CA499772D A CA 499772DA CA 499772 A CA499772 A CA 499772A
Authority
CA
Canada
Prior art keywords
signaling systems
signaling
systems
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
CA499772A
Other languages
English (en)
Inventor
B. Hearn Richard
M. Pruden Harold
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 CA499772A publication Critical patent/CA499772A/fr
Expired legal-status Critical Current

Links

CA499772A Systemes de signalisation Expired CA499772A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA499772T

Publications (1)

Publication Number Publication Date
CA499772A true CA499772A (fr) 1954-02-02

Family

ID=35645219

Family Applications (1)

Application Number Title Priority Date Filing Date
CA499772A Expired CA499772A (fr) Systemes de signalisation

Country Status (1)

Country Link
CA (1) CA499772A (fr)

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