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 Zdenek Novak, Josef KunderafiledCriticalZdenek Novak
Priority to CS296875ApriorityCriticalpatent/CS187599B1/cs
Publication of CS187599B1publicationCriticalpatent/CS187599B1/cs