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 Mirko Benes, Frantisek HajekfiledCriticalMirko Benes
Priority to CS827830ApriorityCriticalpatent/CS238954B1/en
Publication of CS783082A1publicationCriticalpatent/CS783082A1/en
Publication of CS238954B1publicationCriticalpatent/CS238954B1/en