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 Frantisek Ing SmutnyfiledCriticalFrantisek Ing Smutny
Priority to CS864922ApriorityCriticalpatent/CS261633B1/en
Publication of CS492286A1publicationCriticalpatent/CS492286A1/en
Publication of CS261633B1publicationCriticalpatent/CS261633B1/en