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 Vladimir Fekar, Josef LukasfiledCriticalVladimir Fekar
Priority to CS470976ApriorityCriticalpatent/CS188504B1/cs
Publication of CS188504B1publicationCriticalpatent/CS188504B1/cs