CA94137A - Signal surveillant - Google Patents

Signal surveillant

Info

Publication number
CA94137A
CA94137A CA000094137A CA94137DA CA94137A CA 94137 A CA94137 A CA 94137A CA 000094137 A CA000094137 A CA 000094137A CA 94137D A CA94137D A CA 94137DA CA 94137 A CA94137 A CA 94137A
Authority
CA
Canada
Prior art keywords
supervisory signal
supervisory
signal
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
CA000094137A
Other languages
English (en)
Inventor
Edwin Hutchison Smythe
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 Inc
Original Assignee
Western Electric Co Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc
Application granted granted Critical
Publication of CA94137A publication Critical patent/CA94137A/fr
Expired legal-status Critical Current

Links

CA000094137A 1905-04-25 1905-04-25 Signal surveillant Expired CA94137A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA94137T 1905-04-25

Publications (1)

Publication Number Publication Date
CA94137A true CA94137A (fr) 1905-07-11

Family

ID=45210672

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000094137A Expired CA94137A (fr) 1905-04-25 1905-04-25 Signal surveillant

Country Status (1)

Country Link
CA (1) CA94137A (fr)

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