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 NL6511877ApriorityCriticalpatent/NL6511877A/xx
Priority to DE19661564441prioritypatent/DE1564441A1/de
Priority to GB4019266Aprioritypatent/GB1156038A/en
Publication of NL6511877ApublicationCriticalpatent/NL6511877A/xx