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Application filed by Л.А. Гончаровский, В.В. ОднолькоfiledCriticalЛ.А. Гончаровский
Priority to SU182891ApriorityCriticalpatent/SU49956A1/en
Application grantedgrantedCritical
Publication of SU49956A1publicationCriticalpatent/SU49956A1/en