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 Jan StrelecfiledCriticalJan Strelec
Priority to CS811562ApriorityCriticalpatent/CS240303B1/en
Publication of CS156281A1publicationCriticalpatent/CS156281A1/en
Publication of CS240303B1publicationCriticalpatent/CS240303B1/en