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Application filed by И.И. Василевский, Б.А. Канунников, Д.В. КрыловfiledCriticalИ.И. Василевский
Priority to SU130548ApriorityCriticalpatent/SU35548A1/en
Application grantedgrantedCritical
Publication of SU35548A1publicationCriticalpatent/SU35548A1/en