CA514093A - Systeme de signalisation selective a frequences multiples d'appels - Google Patents

Systeme de signalisation selective a frequences multiples d'appels

Info

Publication number
CA514093A
CA514093A CA514093A CA514093DA CA514093A CA 514093 A CA514093 A CA 514093A CA 514093 A CA514093 A CA 514093A CA 514093D A CA514093D A CA 514093DA CA 514093 A CA514093 A CA 514093A
Authority
CA
Canada
Prior art keywords
signalling system
selective calling
calling frequency
frequency signalling
plural selective
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
CA514093A
Other languages
English (en)
Inventor
H. Herrick Roswell
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 Electric Laboratories Inc
Original Assignee
Automatic Electric Laboratories Inc
Publication date
Application granted granted Critical
Publication of CA514093A publication Critical patent/CA514093A/fr
Expired legal-status Critical Current

Links

CA514093A Systeme de signalisation selective a frequences multiples d'appels Expired CA514093A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA514093T

Publications (1)

Publication Number Publication Date
CA514093A true CA514093A (fr) 1955-06-28

Family

ID=35665178

Family Applications (1)

Application Number Title Priority Date Filing Date
CA514093A Expired CA514093A (fr) Systeme de signalisation selective a frequences multiples d'appels

Country Status (1)

Country Link
CA (1) CA514093A (fr)

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