CA402073A - Alarm signal system - Google Patents

Alarm signal system

Info

Publication number
CA402073A
CA402073A CA402073A CA402073DA CA402073A CA 402073 A CA402073 A CA 402073A CA 402073 A CA402073 A CA 402073A CA 402073D A CA402073D A CA 402073DA CA 402073 A CA402073 A CA 402073A
Authority
CA
Canada
Prior art keywords
alarm signal
signal system
alarm
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
CA402073A
Other languages
French (fr)
Inventor
Herbert Wheelock John
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.)
SIGNAL ENGINEERING AND MANUFACTURING Co
Original Assignee
SIGNAL ENGINEERING AND MANUFACTURING Co
Publication date
Application granted granted Critical
Publication of CA402073A publication Critical patent/CA402073A/en
Expired legal-status Critical Current

Links

CA402073A Alarm signal system Expired CA402073A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA402073T

Publications (1)

Publication Number Publication Date
CA402073A true CA402073A (en) 1942-01-06

Family

ID=35412518

Family Applications (1)

Application Number Title Priority Date Filing Date
CA402073A Expired CA402073A (en) Alarm signal system

Country Status (1)

Country Link
CA (1) CA402073A (en)

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