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Application filed by М.М. Осадченко, П.И. РомашенкоfiledCriticalМ.М. Осадченко
Priority to SU90353ApriorityCriticalpatent/SU28604A1/ru
Application grantedgrantedCritical
Publication of SU28604A1publicationCriticalpatent/SU28604A1/ru