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 Francis John WillsfiledCriticalFrancis John Wills
Publication of IE800016LpublicationCriticalpatent/IE800016L/en
Publication of IE49037B1publicationCriticalpatent/IE49037B1/en