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 MarcfiledCriticalKopalnia Wegla Kamiennego Marc
Priority to PL27526988ApriorityCriticalpatent/PL275269A1/en
Publication of PL275269A1publicationCriticalpatent/PL275269A1/en