PERCUSSION TYPE ELECTRONIC MUSICAL INSTRUMENT
United States Patent 3439568
US Patent References:
Push-button switch construction
- - 2684411

Rhythm device
- - 3207835


Inventors:
Griffith, Errol R.
Publication Date:
04/22/1969
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Assignee:
ALLEN ORGAN CO
Primary Class:
84/600
Other Classes:
984/345, 200/532, 84/718, 84/DIG.012
International Classes:
G10H1/34; H01H3/12; G10H1/02




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