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 Bretislav PolacekfiledCriticalBretislav Polacek
Priority to CS613677ApriorityCriticalpatent/CS189501B1/cs
Publication of CS189501B1publicationCriticalpatent/CS189501B1/cs