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Application filed by Д. Ф. ГиндуллинfiledCriticalД. Ф. Гиндуллин
Priority to SU1728836ApriorityCriticalpatent/SU433005A2/ru
Application grantedgrantedCritical
Publication of SU433005A1publicationCriticalpatent/SU433005A1/ru
Publication of SU433005A2publicationCriticalpatent/SU433005A2/ru