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 Институт горного дела им.А.А.СкочинскогоfiledCriticalИнститут горного дела им.А.А.Скочинского
Priority to SU1994926ApriorityCriticalpatent/SU477242A1/en
Application grantedgrantedCritical
Publication of SU477242A1publicationCriticalpatent/SU477242A1/en