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 Helena Rndr Bilkova, Jaroslava Rndr Metelkova, Vlastislav Prom Fyz SvobodafiledCriticalHelena Rndr Bilkova
Priority to CS837598ApriorityCriticalpatent/CS240172B1/en
Publication of CS759883A1publicationCriticalpatent/CS759883A1/en
Publication of CS240172B1publicationCriticalpatent/CS240172B1/en