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 Ivanka Ing Csc Polaskova, Vladimir NovotnyfiledCriticalIvanka Ing Csc Polaskova
Priority to CS863846ApriorityCriticalpatent/CS253696B1/en
Publication of CS384686A1publicationCriticalpatent/CS384686A1/en
Publication of CS253696B1publicationCriticalpatent/CS253696B1/en