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 В.И. КрасовскийfiledCriticalВ.И. Красовский
Priority to SU174818ApriorityCriticalpatent/SU48542A1/ru
Application grantedgrantedCritical
Publication of SU48542A1publicationCriticalpatent/SU48542A1/ru