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 Ivo Ing Hofman, Jiri KalikfiledCriticalIvo Ing Hofman
Priority to CS857560ApriorityCriticalpatent/CS255589B1/cs
Publication of CS756085A1publicationCriticalpatent/CS756085A1/cs
Publication of CS255589B1publicationCriticalpatent/CS255589B1/cs