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
Application filedfiledCritical
Priority to NL58069ApriorityCriticalpatent/NL40371C/xx
Priority to DEI42305Dprioritypatent/DE650851C/de
Priority to NL80467Aprioritypatent/NL44092C/xx
Application grantedgrantedCritical
Publication of NL40371CpublicationCriticalpatent/NL40371C/xx