TK

Tomonori Koizumi

Yamaha: 2 patents #899 of 2,001Top 45%
Overall (All Time): #2,131,564 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
7544878 Musical performance apparatus Junichi Mishima, Liping Lu 2009-06-09
7485794 Electronic musical instrument system 2009-02-03