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 Ing Hrdina, Jan Ing Mueller, Vladimir Ing Mueller, Ferdinand Ing AlesfiledCriticalVladimir Ing Hrdina
Priority to CS833653ApriorityCriticalpatent/CS238118B1/en
Publication of CS365383A1publicationCriticalpatent/CS365383A1/en
Publication of CS238118B1publicationCriticalpatent/CS238118B1/en