Sound producer
United States Patent 3284796

Inventors:
Borsattino, Vincent S.
Marker, Chursel E.
Morris, Harold L.
Publication Date:
11/08/1966
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Assignee:
Borsattino, Vincent S.
Marker, Chursel E.
Morris, Harold L.
Primary Class:
340/384.700
Other Classes:
331/113R, 340/463, 331/47
International Classes:
G08B3/10; G08B3/00
US Patent References:
2926347Marching band metronome
2974424Sound simulator circuit
2977584Engine noise generator
2988708Transistor relaxation oscillator
2994765Emergency vehicle alarm device
3085211Converter with active starter circuit
3101447Modulated oscillator circuit
3108597Generator for electronic muscle stimulator