Rolf Hanggi

📍 Cupertino, CA: #4,039 of 6,989 inventorsTop 60%

🗺 California: #185,134 of 386,348 inventorsTop 50%

Overall (All Time): #2,289,101 of 4,157,543Top 60%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
5446633	Writing implement with rechargeable built-in illumination	—	1995-08-29
4518274	Pen with built-in illumination	—	1985-05-21