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 DebifiledCriticalKopalnia Wegla Kamiennego Debi
Priority to PL25689585ApriorityCriticalpatent/PL149917B1/en
Publication of PL256895A1publicationCriticalpatent/PL256895A1/en
Publication of PL149917B1publicationCriticalpatent/PL149917B1/en