CA307502A - Systeme secret de signalisation - Google Patents

Systeme secret de signalisation

Info

Publication number
CA307502A
CA307502A CA307502A CA307502DA CA307502A CA 307502 A CA307502 A CA 307502A CA 307502 A CA307502 A CA 307502A CA 307502D A CA307502D A CA 307502DA CA 307502 A CA307502 A CA 307502A
Authority
CA
Canada
Prior art keywords
signaling
secrecy system
secrecy
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
CA307502A
Other languages
English (en)
Inventor
Robert Englund Carl
Britton Llewellyn Frederick
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
Publication date
Application granted granted Critical
Publication of CA307502A publication Critical patent/CA307502A/fr
Expired legal-status Critical Current

Links

CA307502A Systeme secret de signalisation Expired CA307502A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA307502T

Publications (1)

Publication Number Publication Date
CA307502A true CA307502A (fr) 1931-01-06

Family

ID=35260654

Family Applications (1)

Application Number Title Priority Date Filing Date
CA307502A Expired CA307502A (fr) Systeme secret de signalisation

Country Status (1)

Country Link
CA (1) CA307502A (fr)

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