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 Akad Gorniczo HutniczafiledCriticalAkad Gorniczo Hutnicza
Priority to PL29816693ApriorityCriticalpatent/PL169853B1/en
Publication of PL298166A1publicationCriticalpatent/PL298166A1/en
Publication of PL169853B1publicationCriticalpatent/PL169853B1/en