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Application filed by А.Я. АвруцкийfiledCriticalА.Я. Авруцкий
Priority to SU2777461/06ApriorityCriticalpatent/RU782440C/ru
Priority claimed from SU2777461/06Aexternal-prioritypatent/RU782440C/ru
Application grantedgrantedCritical
Publication of SU782440A1publicationCriticalpatent/SU782440A1/ru
Publication of RU782440CpublicationCriticalpatent/RU782440C/ru