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 Konink Metaalfab Nv, J N Daalderop & ZonenfiledCriticalKonink Metaalfab Nv
Priority to BE587393ApriorityCriticalpatent/BE587393A/nl
Publication of BE587393ApublicationCriticalpatent/BE587393A/nl