DR

Denis M. X. de La Rochefordiere

Overall (All Time): #2,251,736 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5936172 Musical method for musical instruments such as pianos, and a pedal mechanism therefor — 1999-08-10
4852445 Pedal mechanism for keyboard instruments — 1989-08-01