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 NL132205DpriorityCriticalpatent/NL132205C/xx
Application filedfiledCritical
Priority to NL6701909Aprioritypatent/NL6701909A/xx
Priority to FR1552452Dprioritypatent/FR1552452A/fr
Priority to BE710282Dprioritypatent/BE710282A/xx
Publication of NL6701909ApublicationCriticalpatent/NL6701909A/xx