Electronic oscillator for producing frequencies of musical tones
United States Patent 2806953
Inventors:
Krauss, Serge L.
Publication Date:
09/17/1957
Other Classes:
318/723, 84/454, 84/464R, 331/44, 331/64, 324/76.190, 331/75, 331/179, 331/171, 331/181, 334/47, 324/76.410, 334/87, 984/358
International Classes:
G10H3/06; G10H3/00
US Patent References:
| 2562109 | Signal wave analyzer for deriving pitch information | | | |