SPECIFICATION ACCEPTED: November 10 1932. APPLICATION DATE: February 18 1932. The drawings are often ideal for framing.
IMPROVEMENTS IN STRINGED MUSICAL INSTRUMENTS PATENT HAZELL SYDNEY NSW 1926
ALCXAZS Easily Replace Old Parts With Erhu Code String Bridge Musical Bridge Beautifully Crafted For Performance Improvements Instrument Musical For Chinese Erhu
1893 original patent print - improvements in american organs . sheet 1
1893 original patent print - improvements in american organs . sheet 2
IMPROVEMENTS IN OR RELATING TO PIANOS PATENT HAMMOND GLOUSTER MASSACHUSETTS 1928
1893 original patent print - improvements in upright & horizontal pianos
