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 Vilem Feber, Antonin FeberfiledCriticalVilem Feber
Priority to CS171376ApriorityCriticalpatent/CS185023B1/cs
Publication of CS185023B1publicationCriticalpatent/CS185023B1/cs