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 Tachikawa Spring CofiledCriticalTachikawa Spring Co
Priority to IT20911/84ApriorityCriticalpatent/IT1173642B/it
Publication of IT8420911A0publicationCriticalpatent/IT8420911A0/it
Publication of IT8420911A1publicationCriticalpatent/IT8420911A1/it
Application grantedgrantedCritical
Publication of IT1173642BpublicationCriticalpatent/IT1173642B/it