Title:
Control apparatus
United States Patent 2505182

Inventors:
Haller, George L.
Williams, Everard M.
Publication Date:
04/25/1950
View Patent Images:
Download PDF 2505182 pdf       PDF help
Export Citation:
Click for automatic bibliography generation
Assignee:
Haller, George L.
Williams, Everard M.
Primary Class:
84/680
Other Classes:
331/75, 84/DIG.020, 84/DIG.004, 984/301, 84/715, 331/179, 331/49, 84/697, 331/182, 331/48
International Classes:
G10H1/00
US Patent References:
1832402Electrical musical instrument
2005080Audion amplifier
2017542Electrical musical instrument
2142580Electrical musical instrument
2159241Disabling-gas-producing chemicals
2162806Frequency changer
2203432Electrical musical instrument
2250923Electrical control system
2254284Electrical musical instrument
2274199Electrical musical instrument
2276390Electrical musical instrument
2301871Electrical musical instrument
2328282Electrical musical instrument
2340001Electrical musical instrument