Keying systems for electrical musical instruments for producing steadystate or percussive type tones either separately or concurrently
United States Patent 3333041
US Patent References:
Electronic keying means
- - 2483823


Inventors:
Munch Jr., Walter
Scherer, Robert C.
Publication Date:
07/25/1967
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Assignee:
BALDWIN CO D H
Primary Class:
84/680
Other Classes:
984/322, 84/699
International Classes:
G10H1/057