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Application filed by Г.И. Горштейн, Я.Ф. ДижевскийfiledCriticalГ.И. Горштейн
Priority to SU119859ApriorityCriticalpatent/SU37113A1/en
Application grantedgrantedCritical
Publication of SU37113A1publicationCriticalpatent/SU37113A1/en