CA345625A - Systeme de signalisation a courant alternatif - Google Patents

Systeme de signalisation a courant alternatif

Info

Publication number
CA345625A
CA345625A CA345625A CA345625DA CA345625A CA 345625 A CA345625 A CA 345625A CA 345625 A CA345625 A CA 345625A CA 345625D A CA345625D A CA 345625DA CA 345625 A CA345625 A CA 345625A
Authority
CA
Canada
Prior art keywords
alternating current
signalling system
current signalling
alternating
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
CA345625A
Other languages
English (en)
Inventor
Ernest Ryall Leonard
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.)
Automatic Telephone and Electric Co Ltd
Original Assignee
Automatic Telephone and Electric Co Ltd
Publication date
Application granted granted Critical
Publication of CA345625A publication Critical patent/CA345625A/fr
Expired legal-status Critical Current

Links

CA345625A Systeme de signalisation a courant alternatif Expired CA345625A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA345625T

Publications (1)

Publication Number Publication Date
CA345625A true CA345625A (fr) 1934-10-30

Family

ID=35316899

Family Applications (1)

Application Number Title Priority Date Filing Date
CA345625A Expired CA345625A (fr) Systeme de signalisation a courant alternatif

Country Status (1)

Country Link
CA (1) CA345625A (fr)

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