Pu Wenjun

Yamaha: 2 patents #899 of 2,001Top 45%

Overall (All Time): #2,184,832 of 4,157,543Top 55%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
6965070	Upright keyboard instrument	—	2005-11-15
6777605	Keyboard instrument	—	2004-08-17