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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Publication date
Application filed by С.И. Димаков, Г.С. ПетровfiledCriticalС.И. Димаков
Priority to SU110062ApriorityCriticalpatent/SU30782A1/ru
Application grantedgrantedCritical
Publication of SU30782A1publicationCriticalpatent/SU30782A1/ru