Ƙirƙirar wani nau'i mai mahimmanci na wannan jumla Theremin daga bisani ya gina na uku, ƙananan ƙananan model bayan ya koma Soviet Union a ƙarshen shekarun 1930.
Tabbas, mafi mahimmancin jumlar ita ce "Theremin daga baya ya gina samfurin na uku bayan dawowarsa zuwa Tarayyar Soviet zuwa ƙarshen 1930s, wanda yanzu yake zaune a Cibiyar Theremin a Moscow, kodayake ba a aiki a halin yanzu. "