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 F J ClaesfiledCriticalF J Claes
Priority to BE583278ApriorityCriticalpatent/BE583278A/en
Publication of BE583278ApublicationCriticalpatent/BE583278A/en