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Application filed by М.И. Гальченко, В.А. ЗасосовfiledCriticalМ.И. Гальченко
Priority to SU4674ApriorityCriticalpatent/SU63604A1/ru
Application grantedgrantedCritical
Publication of SU63604A1publicationCriticalpatent/SU63604A1/ru