David W. Kupferschmid

📍 Fryeburg, ME: #267 of 504 inventorsTop 55%

🗺 Maine: #1,571 of 4,281 inventorsTop 40%

Overall (All Time): #2,223,729 of 4,157,543Top 55%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
6203129	Vertical media storage system	—	2001-03-20
6196647	Vertical media storage system	—	2001-03-06