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Priority claimed from JP63185136Aexternal-prioritypatent/JP2856280B2/en
Priority claimed from JP63185134Aexternal-prioritypatent/JP2740519B2/en
Priority claimed from JP63315651Aexternal-prioritypatent/JPH02161027A/en
Application filed by Toto LtdfiledCriticalToto Ltd
Priority claimed from EP89113624Aexternal-prioritypatent/EP0352712B1/en
Application grantedgrantedCritical
Publication of ATE97182T1publicationCriticalpatent/ATE97182T1/en