CA228572A - Signalling system - Google Patents

Signalling system

Info

Publication number
CA228572A
CA228572A CA228572A CA228572DA CA228572A CA 228572 A CA228572 A CA 228572A CA 228572 A CA228572 A CA 228572A CA 228572D A CA228572D A CA 228572DA CA 228572 A CA228572 A CA 228572A
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
CA228572A
Other languages
French (fr)
Inventor
F. Trapp Edwin
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.)
INTERNATIONAL WESTERN ELECTRIC Co
Original Assignee
INTERNATIONAL WESTERN ELECTRIC Co
Publication date
Application granted granted Critical
Publication of CA228572A publication Critical patent/CA228572A/en
Expired legal-status Critical Current

Links

CA228572A Signalling system Expired CA228572A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA228572T

Publications (1)

Publication Number Publication Date
CA228572A true CA228572A (en) 1923-02-06

Family

ID=35124175

Family Applications (1)

Application Number Title Priority Date Filing Date
CA228572A Expired CA228572A (en) Signalling system

Country Status (1)

Country Link
CA (1) CA228572A (en)

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