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 Frantisek HasfiledCriticalFrantisek Has
Priority to CS56878ApriorityCriticalpatent/CS192972B1/en
Publication of CS192972B1publicationCriticalpatent/CS192972B1/en