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 US353401ApriorityCriticalpatent/US3282551A/en
Priority to BE686277Dprioritypatent/BE686277A/xx
Application filedfiledCritical
Priority to NL6612408Aprioritypatent/NL6612408A/xx
Priority to GB3960266Aprioritypatent/GB1132828A/en
Priority to FR75308Aprioritypatent/FR1491783A/fr
Publication of NL6612408ApublicationCriticalpatent/NL6612408A/xx