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
Priority to LU58919DpriorityCriticalpatent/LU58919A1/xx
Priority to BE735251Dprioritypatent/BE735251A/xx
Application filedfiledCritical
Priority to NL6911167Aprioritypatent/NL6911167A/xx
Publication of NL6911167ApublicationCriticalpatent/NL6911167A/xx