SYSTEM OF MOVABLE FRETS FOR STRINGED MUSICAL INSTRUMENT
United States Patent 3469489
US Patent References:
/0577930.html
- - 0577930

Finger board for stringed musical instruments
- - 1727230

Stringed musical instrument
- - 2368256


Inventors:
Barth, Carl
Publication Date:
09/30/1969
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Assignee:
Carl, Barth
Primary Class:
84/314R
Other Classes:
984/115
International Classes:
G10D3/06; G10D3/00; G10D3/06




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