KW

Keiji Wadatsu

NS Nippon Gakki Seizo: 1 patents #163 of 332Top 50%
Overall (All Time): #3,970,159 of 4,157,543Top 100%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4649789 Tuning apparatus for stringed musical instrument — 1987-03-17