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.Д. МаликовfiledCriticalА.Д. Маликов
Priority to SU21543ApriorityCriticalpatent/SU15316A1/en
Application grantedgrantedCritical
Publication of SU15316A1publicationCriticalpatent/SU15316A1/en