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 Frantz Otto ElmarfiledCriticalFrantz Otto Elmar
Priority to BE582245ApriorityCriticalpatent/BE582245A/nl
Publication of BE582245ApublicationCriticalpatent/BE582245A/nl