Title:
Circuit for electronic organ for producing muted voices by the use of photosensitive cells
United States Patent 3374316

Inventors:
Slaats, Mathew A.
Welsh, Alan B.
Publication Date:
03/19/1968
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Assignee:
JASPER ELECTRONICS MFG CORP
Primary Class:
381/123
Other Classes:
984/330, 84/692
International Classes:
G10H1/18
Foreign References:
CA655030A