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Application filed by Л.Л. Кузьмин, В.Ф. ПостниковfiledCriticalЛ.Л. Кузьмин
Priority to SU131284ApriorityCriticalpatent/SU41536A1/en
Application grantedgrantedCritical
Publication of SU41536A1publicationCriticalpatent/SU41536A1/en