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Application filed by М. И. ЕлинfiledCriticalМ. И. Елин
Priority to SU1802294ApriorityCriticalpatent/SU426316A1/ru
Priority claimed from SU1802294Aexternal-prioritypatent/SU426316A1/ru
Application grantedgrantedCritical
Publication of SU426316A2publicationCriticalpatent/SU426316A2/ru
Publication of SU426316A1publicationCriticalpatent/SU426316A1/ru