Musical instruments
United States Patent 3196729
US Patent References:
/0490358.html
- - 0490358

Musical instrument
- - 1384843

Multiple instrument playing device
- - 2912894


Inventors:
Ormston, Burns James
Spencer, Chandler Gordon
Publication Date:
07/27/1965
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Assignee:
ORMSTON BURNS LTD
Primary Class:
84/171
Other Classes:
84/DIG.030, 84/452P, 84/DIG.001, 84/314R, 84/723, 84/313, 984/346
International Classes:
G10H1/34
Foreign References:
DE502119C