G10B 3/12

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Patent/Pub #TitleFiling DateIssue/Publication DatePatent Owner
9899014 Keyboard device and keyboard instrumentApr 05, 16Feb 20, 18CASIO COMPUTER CO., LTD.
9607587 Hammer device and keyboard device for electronic keyboard instrumentOct 29, 14Mar 28, 17KABUSHIKI KAISHA KAWAI GAKKI SEISAKUSHO