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Application filed by Е. И. Белорусец изобретенн, Е. Бараб Тарле М., И. Иванова Р., Р. Верба П.filedCriticalЕ. И. Белорусец изобретенн
Priority to SU1792890ApriorityCriticalpatent/SU409852A2/en
Application grantedgrantedCritical
Publication of SU409852A1publicationCriticalpatent/SU409852A1/en
Publication of SU409852A2publicationCriticalpatent/SU409852A2/en