Legal status (The legal status 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 status listed.)
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Nippon Gakki Co Ltd
Original Assignee
Nippon Gakki Co Ltd
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.)
Filing date
Publication date
Application filed by Nippon Gakki Co LtdfiledCriticalNippon Gakki Co Ltd
Priority to JP386676ApriorityCriticalpatent/JPS5287016A/en
Publication of JPS5287016ApublicationCriticalpatent/JPS5287016A/en
PURPOSE: To fortify strength and make flexural rigidities uniform by making the securing direction of bridges in the direction perpendicular to the wood grain direction of the soundboard.