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Priority claimed from JP29447687Aexternal-prioritypatent/JPH01135321A/en
Priority claimed from JP19513188Aexternal-prioritypatent/JP2642678B2/en
Application filed by Toto Ltd, Aichi Electric Co LtdfiledCriticalToto Ltd
Priority claimed from EP88119020Aexternal-prioritypatent/EP0316865B1/en
Application grantedgrantedCritical
Publication of ATE72742T1publicationCriticalpatent/ATE72742T1/en