CA517449A - Subscriber signalling system - Google Patents

Subscriber signalling system

Info

Publication number
CA517449A
CA517449A CA517449A CA517449DA CA517449A CA 517449 A CA517449 A CA 517449A CA 517449 A CA517449 A CA 517449A CA 517449D A CA517449D A CA 517449DA CA 517449 A CA517449 A CA 517449A
Authority
CA
Canada
Prior art keywords
signalling system
subscriber signalling
subscriber
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
CA517449A
Other languages
French (fr)
Inventor
M. Roschke Erwin
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.)
Zenith Electronics LLC
Original Assignee
Zenith Radio Corp
Publication date
Application granted granted Critical
Publication of CA517449A publication Critical patent/CA517449A/en
Expired legal-status Critical Current

Links

CA517449A Subscriber signalling system Expired CA517449A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA517449T

Publications (1)

Publication Number Publication Date
CA517449A true CA517449A (en) 1955-10-11

Family

ID=35670644

Family Applications (1)

Application Number Title Priority Date Filing Date
CA517449A Expired CA517449A (en) Subscriber signalling system

Country Status (1)

Country Link
CA (1) CA517449A (en)

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