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 Jiri Ing Macak, Pavel MichalekfiledCriticalJiri Ing Macak
Priority to CS876677ApriorityCriticalpatent/CS269914B1/en
Publication of CS667787A1publicationCriticalpatent/CS667787A1/en
Publication of CS269914B1publicationCriticalpatent/CS269914B1/en