CA504718A - Subscriber signalling systems - Google Patents

Subscriber signalling systems

Info

Publication number
CA504718A
CA504718A CA504718A CA504718DA CA504718A CA 504718 A CA504718 A CA 504718A CA 504718 A CA504718 A CA 504718A CA 504718D A CA504718D A CA 504718DA CA 504718 A CA504718 A CA 504718A
Authority
CA
Canada
Prior art keywords
signalling systems
subscriber signalling
subscriber
systems
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
CA504718A
Other languages
French (fr)
Inventor
W. Aram Nathan
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 CA504718A publication Critical patent/CA504718A/en
Expired legal-status Critical Current

Links

CA504718A Subscriber signalling systems Expired CA504718A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA504718T

Publications (1)

Publication Number Publication Date
CA504718A true CA504718A (en) 1954-07-27

Family

ID=35650640

Family Applications (1)

Application Number Title Priority Date Filing Date
CA504718A Expired CA504718A (en) Subscriber signalling systems

Country Status (1)

Country Link
CA (1) CA504718A (en)

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