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 E M StreitzfiledCriticalE M Streitz
Priority to BE578262ApriorityCriticalpatent/BE578262A/nl
Publication of BE578262ApublicationCriticalpatent/BE578262A/nl