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 Jan Adriaan DekkerfiledCriticalJan Adriaan Dekker
Priority to BE595659ApriorityCriticalpatent/BE595659A/en
Publication of BE595659ApublicationCriticalpatent/BE595659A/en