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Application filed by В.А. Ошмянский, нский В.А. ОшмfiledCriticalВ.А. Ошмянский
Priority to SU103549ApriorityCriticalpatent/SU28830A1/en
Application grantedgrantedCritical
Publication of SU28830A1publicationCriticalpatent/SU28830A1/en