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 Jozef Ing Veiser, Pelegrin Eduard, Jan Ingcsc Cepel, Ladislav SzarvasyfiledCriticalJozef Ing Veiser
Priority to CS866023ApriorityCriticalpatent/CS257487B1/en
Publication of CS602386A1publicationCriticalpatent/CS602386A1/en
Publication of CS257487B1publicationCriticalpatent/CS257487B1/en