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Priority to JP11809081UpriorityCriticalpatent/JPS5823386U/ja
Publication of JPS5823386UpublicationCriticalpatent/JPS5823386U/ja
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Publication of JPS6128231Y2publicationCriticalpatent/JPS6128231Y2/ja
Method and apparatus for fully adjusting and providing tempered intonation for stringed, fretted musical instruments, and making adjustments to the rule of 18