CA492098A - Electrical selective signalling systems - Google Patents

Electrical selective signalling systems

Info

Publication number
CA492098A
CA492098A CA492098DA CA492098A CA 492098 A CA492098 A CA 492098A CA 492098D A CA492098D A CA 492098DA CA 492098 A CA492098 A CA 492098A
Authority
CA
Canada
Prior art keywords
signalling systems
selective signalling
electrical selective
electrical
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
Other languages
French (fr)
Inventor
A. Stallworthy Frank
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.)
Siemens Brothers and Co Ltd
Original Assignee
Siemens Brothers and Co Ltd
Publication date
Application granted granted Critical
Publication of CA492098A publication Critical patent/CA492098A/en
Expired legal-status Critical Current

Links

CA492098D Electrical selective signalling systems Expired CA492098A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA492098T

Publications (1)

Publication Number Publication Date
CA492098A true CA492098A (en) 1953-04-14

Family

ID=35637478

Family Applications (1)

Application Number Title Priority Date Filing Date
CA492098D Expired CA492098A (en) Electrical selective signalling systems

Country Status (1)

Country Link
CA (1) CA492098A (en)

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