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.П. Константинов, Л.В. ПанкратьевfiledCriticalГ.П. Константинов
Priority to SU123004ApriorityCriticalpatent/SU36261A1/en
Application grantedgrantedCritical
Publication of SU36261A1publicationCriticalpatent/SU36261A1/en