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Application filed by Н.В. НикольскийfiledCriticalН.В. Никольский
Priority to SU93455ApriorityCriticalpatent/SU35159A1/ru
Priority claimed from SU93455Aexternal-prioritypatent/SU35159A1/ru
Application grantedgrantedCritical
Publication of SU28615A1publicationCriticalpatent/SU28615A1/ru
Publication of SU35159A1publicationCriticalpatent/SU35159A1/ru