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 Goyens AlbertfiledCriticalGoyens Albert
Priority to BE609851ApriorityCriticalpatent/BE609851A/fr
Publication of BE609851ApublicationCriticalpatent/BE609851A/fr