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 Armand HitteletfiledCriticalArmand Hittelet
Priority to BE611222ApriorityCriticalpatent/BE611222A/fr
Publication of BE611222ApublicationCriticalpatent/BE611222A/fr