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 PL25655485ApriorityCriticalpatent/PL141149B2/en
Publication of PL256554A2publicationCriticalpatent/PL256554A2/en
Publication of PL141149B2publicationCriticalpatent/PL141149B2/en