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 А.А. КапрановfiledCriticalА.А. Капранов
Priority to SU31444ApriorityCriticalpatent/SU11711A1/ru
Application grantedgrantedCritical
Publication of SU11711A1publicationCriticalpatent/SU11711A1/ru