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 Alfred Maciey, Neppe Hans Walter, Guenter Quatuor, Alfred Schulze, Guenter WagnerfiledCriticalAlfred Maciey
Publication of CS180728B1publicationCriticalpatent/CS180728B1/cs