CA407551A - Signalling system - Google Patents

Signalling system

Info

Publication number
CA407551A
CA407551A CA407551A CA407551DA CA407551A CA 407551 A CA407551 A CA 407551A CA 407551 A CA407551 A CA 407551A CA 407551D A CA407551D A CA 407551DA CA 407551 A CA407551 A CA 407551A
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
CA407551A
Other languages
French (fr)
Inventor
Spencer Percival William
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.)
Electrical and Musical Industries Ltd
Original Assignee
Electrical and Musical Industries Ltd
Publication date
Application granted granted Critical
Publication of CA407551A publication Critical patent/CA407551A/en
Expired legal-status Critical Current

Links

CA407551A Signalling system Expired CA407551A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA407551T

Publications (1)

Publication Number Publication Date
CA407551A true CA407551A (en) 1942-09-22

Family

ID=35418851

Family Applications (1)

Application Number Title Priority Date Filing Date
CA407551A Expired CA407551A (en) Signalling system

Country Status (1)

Country Link
CA (1) CA407551A (en)

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