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 Литейный Завод "Центролит"filedCriticalЛитейный Завод "Центролит"
Priority to SU817395ApriorityCriticalpatent/SU497090A1/en
Application grantedgrantedCritical
Publication of SU497090A1publicationCriticalpatent/SU497090A1/en