Inventor
SHIMOMUKU YOICHIROU
JP5 patents
Patents
5 patentsUS7176370B2Feb 13, 2007
Key structure and keyboard apparatus
YAMAHA CORP19 citations91
US7541532B2Jun 2, 2009
Key structure and keyboard apparatus
YAMAHA CORP10 citations83
US7652207B2Jan 26, 2010
Key structure and keyboard apparatus
YAMAHA CORP4 citations61
US7268285B2Sep 11, 2007
Key structure and keyboard apparatus
YAMAHA CORP0 citations51
US7265288B2Sep 4, 2007
Key structure
YAMAHA CORP0 citations40