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 Backofenfabrik Qu Wenz K G, Wenz QfiledCriticalBackofenfabrik Qu Wenz K G
Priority to BE547438ApriorityCriticalpatent/BE547438A/fr
Publication of BE547438ApublicationCriticalpatent/BE547438A/fr