AU210938B2 - Improvements in electrically-operated buzzer devices - Google Patents

Improvements in electrically-operated buzzer devices

Info

Publication number
AU210938B2
AU210938B2 AU18563/56A AU1856356A AU210938B2 AU 210938 B2 AU210938 B2 AU 210938B2 AU 18563/56 A AU18563/56 A AU 18563/56A AU 1856356 A AU1856356 A AU 1856356A AU 210938 B2 AU210938 B2 AU 210938B2
Authority
AU
Australia
Prior art keywords
electrically
operated buzzer
devices
buzzer devices
operated
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
AU18563/56A
Other versions
AU1856356A (en
Inventor
Wyndham Ellis John
Filing date
Publication date
Application filed filed Critical
Application granted granted Critical
Publication of AU1856356A publication Critical patent/AU1856356A/en
Publication of AU210938B2 publication Critical patent/AU210938B2/en
Expired legal-status Critical Current

Links

AU18563/56A 1956-05-28 Improvements in electrically-operated buzzer devices Expired AU210938B2 (en)

Publications (2)

Publication Number Publication Date
AU1856356A AU1856356A (en) 1956-11-29
AU210938B2 true AU210938B2 (en) 1956-11-29

Family

ID=

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