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. КосульниковfiledCriticalВ.И. Косульников
Priority to SU135825ApriorityCriticalpatent/SU35914A1/en
Application grantedgrantedCritical
Publication of SU35914A1publicationCriticalpatent/SU35914A1/en