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 filed by Hylko Johannes Otgar Van HaagefiledCriticalHylko Johannes Otgar Van Haage
Priority to NL7706450ApriorityCriticalpatent/NL7706450A/nl
Publication of NL7706450ApublicationCriticalpatent/NL7706450A/nl