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 POLTEGOR INSTYTUT Instytut Górnictwa OdkrywkowegofiledCriticalPOLTEGOR INSTYTUT Instytut Górnictwa Odkrywkowego
Priority to PL392817ApriorityCriticalpatent/PL220081B1/pl
Publication of PL392817A1publicationCriticalpatent/PL392817A1/pl
Publication of PL220081B1publicationCriticalpatent/PL220081B1/pl