CA28323A - Annunciator and alarm signal - Google Patents

Annunciator and alarm signal

Info

Publication number
CA28323A
CA28323A CA000028323A CA28323DA CA28323A CA 28323 A CA28323 A CA 28323A CA 000028323 A CA000028323 A CA 000028323A CA 28323D A CA28323D A CA 28323DA CA 28323 A CA28323 A CA 28323A
Authority
CA
Canada
Prior art keywords
annunciator
alarm signal
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
CA000028323A
Other languages
French (fr)
Inventor
Joseph W. Frost
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 CA28323A publication Critical patent/CA28323A/en
Expired legal-status Critical Current

Links

CA000028323A Annunciator and alarm signal Expired CA28323A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA28323T

Publications (1)

Publication Number Publication Date
CA28323A true CA28323A (en) 1888-01-10

Family

ID=45144864

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000028323A Expired CA28323A (en) Annunciator and alarm signal

Country Status (1)

Country Link
CA (1) CA28323A (en)

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