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 NL6508743ApriorityCriticalpatent/NL6508743A/xx
Priority to DEA24871Uprioritypatent/DE1933797U/de
Priority to BE682127Dprioritypatent/BE682127A/nl
Publication of NL6508743ApublicationCriticalpatent/NL6508743A/xx