Title:
Rotatable acoustical apparatus
United States Patent 3057430


Inventors:
Herman, Santi Harris
Application Number:
US81660959A
Publication Date:
10/09/1962
Filing Date:
05/28/1959
Assignee:
ROTOTONE INC
Primary Class:
Other Classes:
84/739, 84/740, 984/313
International Classes:
G10H1/047
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