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 Kovac Jozef, Kurucova Magda Ing CscfiledCriticalKovac Jozef
Priority to CS891862ApriorityCriticalpatent/CS186289A2/en
Publication of CS186289A2publicationCriticalpatent/CS186289A2/en