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 JP63183127Aexternal-prioritypatent/JP2632010B2/ja
Application filed by Sankyo CofiledCriticalSankyo Co
Priority claimed from EP89300856Aexternal-prioritypatent/EP0327280B1/de
Application grantedgrantedCritical
Publication of ATE73676T1publicationCriticalpatent/ATE73676T1/de