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Priority claimed from JP19620087Uexternal-prioritypatent/JPH0710395Y2/en
Priority claimed from JP63029113Aexternal-prioritypatent/JP2720443B2/en
Application filed by Yamaha CorpfiledCriticalYamaha Corp
Priority to SG7295ApriorityCriticalpatent/SG7295G/en
Publication of SG7295GpublicationCriticalpatent/SG7295G/en