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 Oldrich Cepelka, Karel Nepovim, Zdenek SmidafiledCriticalOldrich Cepelka
Priority to CS808470ApriorityCriticalpatent/CS179464B1/cs
Publication of CS179464B1publicationCriticalpatent/CS179464B1/cs