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 Karel Dr Marek, Jaroslav Cermak, Karel Drinek, Pavel Voruda, Josef BulafiledCriticalKarel Dr Marek
Priority to CS851652ApriorityCriticalpatent/CS257706B1/en
Publication of CS165285A1publicationCriticalpatent/CS165285A1/en
Publication of CS257706B1publicationCriticalpatent/CS257706B1/en