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 Olsen Johann Martin, Olsen Hans Peter, Bronn Franz Wilhelm, Luth Carl AugustfiledCriticalOlsen Johann Martin
Publication of CH7454ApublicationCriticalpatent/CH7454A/en