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 Csc PilatfiledCriticalZdenek Csc Pilat
Priority to CS861981ApriorityCriticalpatent/CS258767B1/cs
Publication of CS198186A1publicationCriticalpatent/CS198186A1/cs
Publication of CS258767B1publicationCriticalpatent/CS258767B1/cs