David L. Durfee, Jr.

UN Unknown: 6 patents #2,010 of 83,584Top 3%

PA Parlec: 3 patents #1 of 6Top 20%

T& T&E: 1 patents #4 of 8Top 50%

📍 Meadville, PA: #3 of 150 inventorsTop 2%

🗺 Pennsylvania: #2,146 of 74,527 inventorsTop 3%

Overall (All Time): #141,477 of 4,157,543Top 4%

Patents All Time

Issued Patents All Time

Showing 26–27 of 27 patents

Patent #	Title	Co-Inventors	Date
4923186	Quick lock in parallel and angle plate system for machining vise	—	1990-05-08
4545122	Chain saw gauging attachment	—	1985-10-08