Title:
Electrical music system
United States Patent 1947020
Inventors:
Howland, Ranger Richard
Publication Date:
02/13/1934
Export Citation:
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Assignee:
Howland, Ranger Richard
Primary Class:
84/736
Other Classes:
84/739, 84/740, 984/366
International Classes:
G10H3/16; G10H3/00
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