Inventor
TAKEYAMA HISASHI
JP8 patents
⚠️ This page may combine multiple inventors who share the name “TAKEYAMA HISASHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MURAMATSU SHIGERU
5 patentsUS8389833B2Mar 5, 2013
Upright piano type action
MURAMATSU SHIGERU8 citations82
US8294009B2Oct 23, 2012
Upright piano type action
MURAMATSU SHIGERU6 citations71
US8558095B2Oct 15, 2013
Keyboard apparatus
MURAMATSU SHIGERU3 citations60
US8779256B2Jul 15, 2014
Keyboard apparatus
MURAMATSU SHIGERU0 citations39
US8222509B2Jul 17, 2012
Pedal device of electronic keyboard musical instrument
MURAMATSU SHIGERU0 citations39