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 NL6513949ApriorityCriticalpatent/NL6513949A/xx
Priority to GB4784366Aprioritypatent/GB1150930A/en
Priority to CH1545266Aprioritypatent/CH449786A/de
Priority to SE1467166Aprioritypatent/SE317747B/xx
Publication of NL6513949ApublicationCriticalpatent/NL6513949A/xx