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 Josef SvadlenafiledCriticalJosef Svadlena
Priority to CS831607ApriorityCriticalpatent/CS238747B1/cs
Publication of CS160783A1publicationCriticalpatent/CS160783A1/cs
Publication of CS238747B1publicationCriticalpatent/CS238747B1/cs