. "L\u00E9on Theremin" . . "1896" . . "Leon Theremin" . . . . . "Leon Theremin#Some of Theremin's inventions" . . . . . . "Lev Sergeyevich Termen" . . . . . . "Lev Termen" . "Leon Theremin" . . . . "1993" . . . . . . . . . . . . . . . . . . . . . . . . . . . "1896-08-27" . . . . . . . . . . . . "Termen" . . . . . . . "1993-11-03" . . . . "Instrument of Espionage" . "Theremin" . . . . . . . "Lev Sergeivitch Termen" . . . . . . .