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 Sp K B Gazstrojmashina Min StrfiledCriticalSp K B Gazstrojmashina Min Str
Priority to SU772529031ApriorityCriticalpatent/SU648694A1/en
Application grantedgrantedCritical
Publication of SU648694A1publicationCriticalpatent/SU648694A1/en