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Priority to JP3637983UpriorityCriticalpatent/JPS59141392U/ja
Publication of JPS59141392UpublicationCriticalpatent/JPS59141392U/ja
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Publication of JPS6333252Y2publicationCriticalpatent/JPS6333252Y2/ja
Method and apparatus for fully adjusting and providing tempered intonation for stringed, fretted musical instruments, and making adjustments to the rule of 18