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 Zaklad Doswiadczalny Dzwigow SfiledCriticalZaklad Doswiadczalny Dzwigow S
Priority to CS141675ApriorityCriticalpatent/CS189690B2/cs
Publication of CS189690B2publicationCriticalpatent/CS189690B2/cs