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 filedfiledCritical
Priority to NL6508598ApriorityCriticalpatent/NL6508598A/xx
Priority to DE1966N0018883prioritypatent/DE1946769U/de
Publication of NL6508598ApublicationCriticalpatent/NL6508598A/xx