Leon Theremin

1. "Termenvox-type Electromusical Instrument", Lev Termen & Lev Korolev, Russian Patent SU1048503, 1983. later transistor version
2. "Electric Music Training device Tonika", Lev Termen & V.I. Maksimov, Russina Patent SU1082185, 1987.
3. "Electric Musical Instrument" Lev Termen, Russian Patent SU601742, 1978.
4. "Timing System", Leon Theremin, US Patent 2047912, 1936.
5. "Method and Apparatus for the Generation of Sounds", Leon Theremin, US Patent 1661058, 1928. the theremin.
6. "Signaling Apparatus", Leon Theremin, US Patent 1658953, 1928. a proximity-sensing alarm.
7. "Improvements in and Relating to the Measuring of Variations of Frequency of Oscillating Electric Systems", Leon Theremin [Theremin Patents Corp], British PatentÊGB353482, 1931.
8. "An Improved Method of Detecting Changes in Electric Capacity", Leon Theremin [Theremin Patents Corp], British Patent GB353481,Ê1931.
9. "Doppelgitterroehren-Interferenzgenerator", Leon Theremin [Theremin Patents Corp], German Patent DE541087, 1932.

Five german-language patents from 1930-1932 describing the original Theremin

1. DE499203C, 1930
2. DE449075C, 1931
3. CH148298A, 1931
4. DE540745C, 1932
5. DE567233C, 1932