Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Г.Г. ПоварнинfiledCriticalГ.Г. Поварнин
Priority to SU77915ApriorityCriticalpatent/SU2316A1/ru
Application grantedgrantedCritical
Publication of SU2316A1publicationCriticalpatent/SU2316A1/ru