Inventor

KUNISADA KEI

JP3 patents

Patents

3 patents

US7432428B2Oct 7, 2008

Electronic keyboard musical instrument

YAMAHA CORP21 citations91

US7078611B2Jul 18, 2006

Keyboard instrument

YAMAHA CORP14 citations81

US6392136B2May 21, 2002

Musical tone generation structure of electronic musical instrument

YAMAHA CORP14 citations78