RK

Riichi Kitajima

KS Kawai Gakki Seisakusho: 1 patents #113 of 198Top 60%
Overall (All Time): #3,656,053 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5932821 Hammer head for piano and method of manufacturing same Muneo Ishida 1999-08-03