Douglas B. Coffman

📍 Oklahoma City, OK: #470 of 1,463 inventorsTop 35%

🗺 Oklahoma: #4,502 of 12,736 inventorsTop 40%

Overall (All Time): #1,947,698 of 4,157,543Top 50%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
D810932	Curved needle with two ports	—	2018-02-20
D752699	Attachable sight for firearms	—	2016-03-29