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 FR1480725DpriorityCriticalpatent/FR1480725A/fr
Application filedfiledCritical
Priority to NL6506003Aprioritypatent/NL6506003A/xx
Priority to DE1966I0030789prioritypatent/DE1289335B/de
Priority to GB2078366Aprioritypatent/GB1122209A/en
Publication of NL6506003ApublicationCriticalpatent/NL6506003A/xx
