CA417505A - Closed circuit alarm - Google Patents

Closed circuit alarm

Info

Publication number
CA417505A
CA417505A CA417505A CA417505DA CA417505A CA 417505 A CA417505 A CA 417505A CA 417505 A CA417505 A CA 417505A CA 417505D A CA417505D A CA 417505DA CA 417505 A CA417505 A CA 417505A
Authority
CA
Canada
Prior art keywords
closed circuit
circuit alarm
alarm
closed
circuit
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
CA417505A
Other languages
French (fr)
Inventor
Fountain William
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.)
Individual
Original Assignee
Individual
Publication date
Application granted granted Critical
Publication of CA417505A publication Critical patent/CA417505A/en
Expired legal-status Critical Current

Links

CA417505A Closed circuit alarm Expired CA417505A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA417505T

Publications (1)

Publication Number Publication Date
CA417505A true CA417505A (en) 1944-01-04

Family

ID=35526753

Family Applications (1)

Application Number Title Priority Date Filing Date
CA417505A Expired CA417505A (en) Closed circuit alarm

Country Status (1)

Country Link
CA (1) CA417505A (en)

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