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 PlachyfiledCriticalFrantisek Plachy
Priority to CS760875ApriorityCriticalpatent/CS179228B1/cs
Publication of CS179228B1publicationCriticalpatent/CS179228B1/cs