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 Jiri Ing Rajdl, Jiri Ing Csc Hejma, Ludek HladikfiledCriticalJiri Ing Rajdl
Priority to CS825216ApriorityCriticalpatent/CS236709B1/en
Publication of CS521682A1publicationCriticalpatent/CS521682A1/en
Publication of CS236709B1publicationCriticalpatent/CS236709B1/en