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CA273071A - Systeme de signalisation - Google Patents

Systeme de signalisation

Info

Publication number
CA273071A
CA273071A CA273071A CA273071DA CA273071A CA 273071 A CA273071 A CA 273071A CA 273071 A CA273071 A CA 273071A CA 273071D A CA273071D A CA 273071DA CA 273071 A CA273071 A CA 273071A
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
CA273071A
Other languages
English (en)
Inventor
H. Buttner 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 CA273071A publication Critical patent/CA273071A/fr
Expired legal-status Critical Current

Links

CA273071A Systeme de signalisation Expired CA273071A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA273071T

Publications (1)

Publication Number Publication Date
CA273071A true CA273071A (fr) 1927-08-09

Family

ID=35203102

Family Applications (1)

Application Number Title Priority Date Filing Date
CA273071A Expired CA273071A (fr) Systeme de signalisation

Country Status (1)

Country Link
CA (1) CA273071A (fr)

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