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 С.В. ДавыдовfiledCriticalС.В. Давыдов
Priority to SU51481ApriorityCriticalpatent/SU19160A1/en
Application grantedgrantedCritical
Publication of SU19160A1publicationCriticalpatent/SU19160A1/en