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 NL6509411ApriorityCriticalpatent/NL6509411A/xx
Priority to DE1966M0053791prioritypatent/DE1936369U/de
Publication of NL6509411ApublicationCriticalpatent/NL6509411A/xx