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 Rabas, Jan Benes, Josef Sulc, Ludek Holub, Jindrich MatejkafiledCriticalVaclav Rabas
Priority to CS395574ApriorityCriticalpatent/CS181377B1/en
Publication of CS181377B1publicationCriticalpatent/CS181377B1/en