Charles R. Lee

📍 Placerville, CA: #4 of 19 inventorsTop 25%

🗺 California: #3,859 of 26,763 inventorsTop 15%

Overall (2002): #70,750 of 266,432Top 30%

Patents 2002

Issued Patents 2002

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
6472589	Method and apparatus for sensing, controlling and recording key motion in a keyboard musical instrument	—	2002-10-29
6384305	Method and apparatus for sensing key movement in a musical keyboard	—	2002-05-07