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 Attilio PiazzafiledCriticalAttilio Piazza
Priority to IT2122389UpriorityCriticalpatent/IT216652Z2/it
Publication of IT8921223V0publicationCriticalpatent/IT8921223V0/it
Priority to EP19900108221prioritypatent/EP0397007A3/en
Application grantedgrantedCritical
Publication of IT216652Z2publicationCriticalpatent/IT216652Z2/it
Priority to US07/879,501prioritypatent/US5235170A/en