Electronic musical instrument
United States Patent 3178499
Inventors:
Peterson, Richard H.
Publication Date:
04/13/1965
Assignee:
Peterson, Richard H.
Other Classes:
984/322, 84/702
International Classes:
G10H1/057
Foreign References:
| GB613812A | | | | |
| GB622910A | | | | |
| GB727986A | | | | |