CA541601A - Telephone et systemes de signalisation selective - Google Patents

Telephone et systemes de signalisation selective

Info

Publication number
CA541601A
CA541601A CA541601A CA541601DA CA541601A CA 541601 A CA541601 A CA 541601A CA 541601 A CA541601 A CA 541601A CA 541601D A CA541601D A CA 541601DA CA 541601 A CA541601 A CA 541601A
Authority
CA
Canada
Prior art keywords
telephone
signaling systems
selective signaling
selective
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
CA541601A
Other languages
English (en)
Inventor
J. Dorr Clarence
Original Assignee
Northern Electric Co Ltd
Publication date
Application granted granted Critical
Publication of CA541601A publication Critical patent/CA541601A/fr
Expired legal-status Critical Current

Links

CA541601A Telephone et systemes de signalisation selective Expired CA541601A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA541601T

Publications (1)

Publication Number Publication Date
CA541601A true CA541601A (fr) 1957-05-28

Family

ID=35698750

Family Applications (1)

Application Number Title Priority Date Filing Date
CA541601A Expired CA541601A (fr) Telephone et systemes de signalisation selective

Country Status (1)

Country Link
CA (1) CA541601A (fr)

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