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 Thompson Jack EvansfiledCriticalThompson Jack Evans
Priority to IT19208/80ApriorityCriticalpatent/IT1129510B/en
Publication of IT8019208A0publicationCriticalpatent/IT8019208A0/en
Application grantedgrantedCritical
Publication of IT1129510BpublicationCriticalpatent/IT1129510B/en