Tone generation system
United States Patent 3213180

Inventors:
Cookerly, Jack C.
Hall, George R.
Publication Date:
10/19/1965
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Assignee:
Cookerly, Jack C.
Hall, George R.
Primary Class:
84/722
Other Classes:
84/711, 984/367, 84/702, 84/726
International Classes:
G10H3/18; G10H3/00