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.)
Filing date
Publication date
Application filed by Г.П. Лавров, Г.И. РомановfiledCriticalГ.П. Лавров
Priority to SU374129ApriorityCriticalpatent/SU73775A1/ru
Application grantedgrantedCritical
Publication of SU73775A1publicationCriticalpatent/SU73775A1/ru