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 Karel PolakfiledCriticalKarel Polak
Priority to CS574379ApriorityCriticalpatent/CS205272B1/hu
Publication of CS205272B1publicationCriticalpatent/CS205272B1/hu