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 Chamraz, Jozef KubofiledCriticalJozef Ing Chamraz
Priority to CS831491ApriorityCriticalpatent/CS237118B1/en
Publication of CS149183A1publicationCriticalpatent/CS149183A1/en
Publication of CS237118B1publicationCriticalpatent/CS237118B1/en