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 TichyfiledCriticalZdenek Tichy
Priority to CS188377ApriorityCriticalpatent/CS187928B1/cs
Publication of CS187928B1publicationCriticalpatent/CS187928B1/cs