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 Karl Zurell, Herbert AulerfiledCriticalKarl Zurell
Priority to CS328567ApriorityCriticalpatent/CS186701B2/en
Publication of CS186701B2publicationCriticalpatent/CS186701B2/en