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 Vaclav Turko, Antonin BrabecfiledCriticalVaclav Turko
Priority to CS877976ApriorityCriticalpatent/CS183986B1/cs
Publication of CS183986B1publicationCriticalpatent/CS183986B1/cs