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.Н. НовиковfiledCriticalВ.Н. Новиков
Priority to SU3648ApriorityCriticalpatent/SU72960A1/en
Application grantedgrantedCritical
Publication of SU72960A1publicationCriticalpatent/SU72960A1/en