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 Ludvik PopelkafiledCriticalLudvik Popelka
Priority to CS888621ApriorityCriticalpatent/CS271187B1/cs
Publication of CS862188A1publicationCriticalpatent/CS862188A1/cs
Publication of CS271187B1publicationCriticalpatent/CS271187B1/cs