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 Krnavek FrantisekfiledCriticalKrnavek Frantisek
Priority to CS857486ApriorityCriticalpatent/CS251848B1/en
Publication of CS748685A1publicationCriticalpatent/CS748685A1/en
Publication of CS251848B1publicationCriticalpatent/CS251848B1/en