Musical instrument
United States Patent 2484930
US Patent References:
/0709963.html
- - 0709963

Musical instrument
- - 2221814

Musical instrument
- - 2259858

Musical instrument
- - 2273768

Musical instrument
- - 2293499


Inventors:
Cornelius, Richard T.
Publication Date:
10/18/1949
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Assignee:
Cornelius, Richard T.
Primary Class:
84/337
Other Classes:
84/445, 984/12
International Classes:
G10B3/10; G10B3/00