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.)
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Priority claimed from JP6306921Aexternal-prioritypatent/JP2746157B2/en
Application filed by Yamaha CorpfiledCriticalYamaha Corp
Priority to SG1995001756ApriorityCriticalpatent/SG32525A1/en
Publication of SG32525A1publicationCriticalpatent/SG32525A1/en