John Duffner

📍 Lexington Park, MD: #16 of 81 inventorsTop 20%

🗺 Maryland: #13,387 of 35,612 inventorsTop 40%

Overall (All Time): #1,864,181 of 4,157,543Top 45%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
11536539	Selectable lug handgrip mount for a firearm	—	2022-12-27
11054222	Selectable lug handgrip mount for a firearm	—	2021-07-06