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 Boucek Jiri, Vrba Jan, Doc Mudr Andrysek, Josef Ing RamertfiledCriticalBoucek Jiri
Priority to CS831791ApriorityCriticalpatent/CS251555B1/cs
Publication of CS179183A1publicationCriticalpatent/CS179183A1/cs
Publication of CS251555B1publicationCriticalpatent/CS251555B1/cs