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Priority claimed from JP62332648Aexternal-prioritypatent/JPH0646355B2/en
Priority claimed from JP62332649Aexternal-prioritypatent/JP2600741B2/en
Priority claimed from JP62332651Aexternal-prioritypatent/JP2668691B2/en
Priority claimed from JP62332650Aexternal-prioritypatent/JPH0721718B2/en
Application filed by Yamaha CorpfiledCriticalYamaha Corp
Priority to SG165894ApriorityCriticalpatent/SG165894G/en
Publication of SG165894GpublicationCriticalpatent/SG165894G/en