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 Robert W BeattlefiledCriticalRobert W Beattle
Priority to BE587007ApriorityCriticalpatent/BE587007A/fr
Publication of BE587007ApublicationCriticalpatent/BE587007A/fr