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 Emil Kriz, Christo TerzievfiledCriticalEmil Kriz
Priority to CS817773ApriorityCriticalpatent/CS165221B1/cs
Publication of CS165221B1publicationCriticalpatent/CS165221B1/cs