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 Kamiel De CraeckerfiledCriticalAlfred Kamiel De Craecker
Priority to BE591273ApriorityCriticalpatent/BE591273A/nl
Publication of BE591273ApublicationCriticalpatent/BE591273A/nl