Title:
Guitar keyboard
United States Patent 2744433


Inventors:
Rooms, David N.
Application Number:
US36759253A
Publication Date:
05/08/1956
Filing Date:
07/13/1953
Assignee:
Rooms, David N.
Primary Class:
Other Classes:
984/116
International Classes:
G10D3/08
View Patent Images:
US Patent References:
0957681N/A1910-05-10
0295984N/A1884-04-01