Document Type and Number:
United States Patent 2967909
Publication Date:
01/10/1961
Other Classes:
332/180, 332/172, 327/494, 84/705, 984/311
International Classes:
G10H1/043; G10H1/04
US Patent References:
| 2233860 | Modulating system | | | |
| 2485538 | Electronic means providing tremolo for electrically operated musical instruments | | | |
| 2534342 | Vibrato means for audio amplifiers | | | |
| 2682640 | Arrangement for modulating electric carrier wave oscillations | | | |