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 Bedrich Rotrekl, Miloslav LidarikfiledCriticalBedrich Rotrekl
Priority to CS396175ApriorityCriticalpatent/CS185342B1/cs
Publication of CS185342B1publicationCriticalpatent/CS185342B1/cs