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 Alfred Albert RathsfiledCriticalAlfred Albert Raths
Priority to BE580803ApriorityCriticalpatent/BE580803A/en
Publication of BE580803ApublicationCriticalpatent/BE580803A/en