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 Проектный институт Проектпромвентил, ФОНД жтшfiledCriticalПроектный институт Проектпромвентил
Priority to SU1710285ApriorityCriticalpatent/SU418679A2/ru
Application grantedgrantedCritical
Publication of SU418679A1publicationCriticalpatent/SU418679A1/ru
Publication of SU418679A2publicationCriticalpatent/SU418679A2/ru