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 Inst Chem Przerobki WeglafiledCriticalInst Chem Przerobki Wegla
Priority to PL26958787ApriorityCriticalpatent/PL152904B1/en
Publication of PL269587A1publicationCriticalpatent/PL269587A1/en
Publication of PL152904B1publicationCriticalpatent/PL152904B1/en