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 Zdenek Ing Stepanek, Karel Lulek, Vladislav Ing TomanfiledCriticalZdenek Ing Stepanek
Priority to CS855236ApriorityCriticalpatent/CS260107B1/en
Publication of CS523685A1publicationCriticalpatent/CS523685A1/en
Publication of CS260107B1publicationCriticalpatent/CS260107B1/en