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Application filed by П. П. Корочко, В. Е. Лукь нов , Т. И. КорочкеfiledCriticalП. П. Корочко, В. Е. Лукь нов , Т. И. Корочке
Priority to SU1825053ApriorityCriticalpatent/SU429207A1/ru
Application grantedgrantedCritical
Publication of SU429207A1publicationCriticalpatent/SU429207A1/ru