CA187552A - Systeme de signaux - Google Patents

Systeme de signaux

Info

Publication number
CA187552A
CA187552A CA000187552A CA187552DA CA187552A CA 187552 A CA187552 A CA 187552A CA 000187552 A CA000187552 A CA 000187552A CA 187552D A CA187552D A CA 187552DA CA 187552 A CA187552 A CA 187552A
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
CA000187552A
Other languages
English (en)
Inventor
Roy Douglas Conway
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc
Application granted granted Critical
Publication of CA187552A publication Critical patent/CA187552A/fr
Expired legal-status Critical Current

Links

CA000187552A 1918-02-07 1918-02-07 Systeme de signaux Expired CA187552A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA187552T 1918-02-07

Publications (1)

Publication Number Publication Date
CA187552A true CA187552A (fr) 1918-11-19

Family

ID=45307203

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000187552A Expired CA187552A (fr) 1918-02-07 1918-02-07 Systeme de signaux

Country Status (1)

Country Link
CA (1) CA187552A (fr)

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