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 A Claeys Flandria AtelfiledCriticalA Claeys Flandria Atel
Priority to BE586503ApriorityCriticalpatent/BE586503A/fr
Publication of BE586503ApublicationCriticalpatent/BE586503A/fr