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 Sosnica Kopalnia Wegla KamiennfiledCriticalSosnica Kopalnia Wegla Kamienn
Priority to PL29199291ApriorityCriticalpatent/PL166037B1/en
Publication of PL291992A2publicationCriticalpatent/PL291992A2/en
Publication of PL166037B1publicationCriticalpatent/PL166037B1/en