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 NL135224DpriorityCriticalpatent/NL135224C/xx
Priority to DEB72387Aprioritypatent/DE1264227B/de
Application filedfiledCritical
Priority to NL6516524Aprioritypatent/NL6516524A/xx
Priority to BE676964Aprioritypatent/BE676964A/xx
Publication of NL6516524ApublicationCriticalpatent/NL6516524A/xx
