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 to DE8234215UpriorityCriticalpatent/DE8234215U1/en
Application filed by Grati GiorgiofiledCriticalGrati Giorgio
Priority to ITMI1981U23711Uprioritypatent/IT8123711U1/en
Publication of IT8123711V0publicationCriticalpatent/IT8123711V0/en
Priority to FR8220378Aprioritypatent/FR2517530A3/en
Publication of IT8123711U1publicationCriticalpatent/IT8123711U1/en
Priority to US06/731,609prioritypatent/US4561706A/en