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 Svensson Boek Nils, Reginald Robsahm TyckofiledCriticalSvensson Boek Nils
Publication of CH18377ApublicationCriticalpatent/CH18377A/de