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 Glowny Instytut GornictwafiledCriticalGlowny Instytut Gornictwa
Priority to PL29137391ApriorityCriticalpatent/PL165582B1/pl
Publication of PL291373A1publicationCriticalpatent/PL291373A1/xx
Publication of PL165582B1publicationCriticalpatent/PL165582B1/pl