CA440968A - Systeme de signalisation - Google Patents

Systeme de signalisation

Info

Publication number
CA440968A
CA440968A CA440968A CA440968DA CA440968A CA 440968 A CA440968 A CA 440968A CA 440968 A CA440968 A CA 440968A CA 440968D A CA440968D A CA 440968DA CA 440968 A CA440968 A CA 440968A
Authority
CA
Canada
Prior art keywords
signalling system
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
CA440968A
Other languages
English (en)
Inventor
Ellis Blount Frank
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
Bell Telephone Laboratories Inc
Publication date
Application granted granted Critical
Publication of CA440968A publication Critical patent/CA440968A/fr
Expired legal-status Critical Current

Links

CA440968A Systeme de signalisation Expired CA440968A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA440968T

Publications (1)

Publication Number Publication Date
CA440968A true CA440968A (fr) 1947-04-22

Family

ID=35556200

Family Applications (1)

Application Number Title Priority Date Filing Date
CA440968A Expired CA440968A (fr) Systeme de signalisation

Country Status (1)

Country Link
CA (1) CA440968A (fr)

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