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CA638122A - Audible alarm device - Google Patents

Audible alarm device

Info

Publication number
CA638122A
CA638122A CA638122A CA638122DA CA638122A CA 638122 A CA638122 A CA 638122A CA 638122 A CA638122 A CA 638122A CA 638122D A CA638122D A CA 638122DA CA 638122 A CA638122 A CA 638122A
Authority
CA
Canada
Prior art keywords
alarm device
audible alarm
audible
alarm
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
CA638122A
Inventor
Allen George
M. Venison Douglas
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.)
Matthew Hall and Co Ltd
Original Assignee
Matthew Hall and Co Ltd
Publication date
Application granted granted Critical
Publication of CA638122A publication Critical patent/CA638122A/en
Expired legal-status Critical Current

Links

CA638122A Audible alarm device Expired CA638122A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA638122T

Publications (1)

Publication Number Publication Date
CA638122A true CA638122A (en) 1962-03-13

Family

ID=35916631

Family Applications (1)

Application Number Title Priority Date Filing Date
CA638122A Expired CA638122A (en) Audible alarm device

Country Status (1)

Country Link
CA (1) CA638122A (en)

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