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Priority to JP6715882UpriorityCriticalpatent/JPS58170695U/ja
Publication of JPS58170695UpublicationCriticalpatent/JPS58170695U/ja
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Publication of JPS6318065Y2publicationCriticalpatent/JPS6318065Y2/ja
Electrical musical instrument with key guide plate elastically connected to keyboard frame permitting transverse vibratory motion of plate to achieve special effects