David Francis Kofflin

📍 Bloomington, MN: #333 of 1,157 inventorsTop 30%

🗺 Minnesota: #15,886 of 52,454 inventorsTop 35%

Overall (All Time): #1,280,735 of 4,157,543Top 35%

Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #	Title	Co-Inventors	Date
6116300	Push-pull type pre-conditioned air adapter	—	2000-09-12
5927355	Pre-conditioned air adapter	—	1999-07-27
5915654	Pre-conditioned air connection ring	—	1999-06-29
5355917	Pre-conditioned air adapter chute	—	1994-10-18