CA383906A - Systeme de signalisation electrique - Google Patents

Systeme de signalisation electrique

Info

Publication number
CA383906A
CA383906A CA383906A CA383906DA CA383906A CA 383906 A CA383906 A CA 383906A CA 383906 A CA383906 A CA 383906A CA 383906D A CA383906D A CA 383906DA CA 383906 A CA383906 A CA 383906A
Authority
CA
Canada
Prior art keywords
signalling system
electrical signalling
electrical
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
CA383906A
Other languages
English (en)
Inventor
Robert Rayner Thomas
Arthur Burns George
Stanley Woodhead Harry
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 CA383906A publication Critical patent/CA383906A/fr
Expired legal-status Critical Current

Links

CA383906A Systeme de signalisation electrique Expired CA383906A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA383906T

Publications (1)

Publication Number Publication Date
CA383906A true CA383906A (fr) 1939-09-05

Family

ID=35389136

Family Applications (1)

Application Number Title Priority Date Filing Date
CA383906A Expired CA383906A (fr) Systeme de signalisation electrique

Country Status (1)

Country Link
CA (1) CA383906A (fr)

Similar Documents

Publication Publication Date Title
CA383906A (fr) Systeme de signalisation electrique
AU112184B2 (en) Electric signalling systems
CA382808A (fr) Systeme de signaux a courant directe
AU564539A (en) Electric signalling systems
CA383114A (fr) Systeme electrique
CA384455A (fr) Systeme electrique
CA379450A (fr) Systeme de signalisation
CA382192A (fr) Systeme de signalisation
CA384895A (fr) Systeme de signalisation
CA376695A (fr) Systeme de signalisation electrique
CA373049A (fr) Systeme de signalisation electrique
CA381620A (fr) Appareil de signalisation electrique
CA385260A (fr) Systeme de signaux telephoniques
CA369901A (fr) Systeme de signalisation electrique
CA379051A (fr) Systeme selectif de signalisation
CA378931A (fr) Systeme de distribution electrique
CA380811A (fr) Systeme de distribution electrique
CA381673A (fr) Systeme de distribution electrique
CA379149A (fr) Systeme de protection electrique
CA382985A (fr) Systeme protecteur electrique
CA381252A (fr) Systeme a courant constant
CA384910A (fr) Systeme commutateur electrique
CA378622A (fr) Systeme de communication des sons
CA385963A (fr) Systeme de signalisation a hautes frequences
AU107981B2 (en) Improvements in electrical signalling systems