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 Kopalnia Wegla Kamiennego ZiemfiledCriticalKopalnia Wegla Kamiennego Ziem
Priority to PL19338276ApriorityCriticalpatent/PL193382A1/pl
Publication of PL193382A1publicationCriticalpatent/PL193382A1/pl