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
Priority claimed from US06/699,219external-prioritypatent/US4818135A/en
Application filed by Gray Robert B Jayne Michael EfiledCriticalGray Robert B Jayne Michael E
Publication of IT8520932A0publicationCriticalpatent/IT8520932A0/it
Application grantedgrantedCritical
Publication of IT1185590BpublicationCriticalpatent/IT1185590B/it