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Title:
INTERCHANGEABLE STRINGED INSTRUMENT
United States Patent 3538807
Inventors:
Francis, Louis
Publication Date:
11/10/1970
View Patent Images:
Download PDF 3538807
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Assignee:
Louis, Francis
Primary Class:
84/267
Other Classes:
84/293, 84/743, 84/314R
International Classes:
G10D1/08
;
G10D1/00
; G10D1/08; G10D3/06
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