DF

Duane Fetko

DI Ductmate Industries: 5 patents #5 of 19Top 30%
DC Dmi Companies: 1 patents #5 of 17Top 30%
📍 Masontown, PA: #31 of 171 inventorsTop 20%
🗺 Pennsylvania: #13,581 of 74,527 inventorsTop 20%
Overall (All Time): #783,865 of 4,157,543Top 20%
6
Patents All Time

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
12337341 HVAC round pipe sealed fittings 2025-06-24
10898920 HVAC round pipe sealed fittings 2021-01-26
10589911 Angle plate package having a single strap Douglas G. Gudenburr 2020-03-17
10436369 High efficiency take-off fitting Alvin L. Jefferson, David E. Overdorff, II, Branden Butella, David Agee 2019-10-08
8973954 Dual purpose dimple for HVAC circular ductwork Alvin Coughenour, Vincent L. Bloom 2015-03-10
8429803 Dual purpose dimple for HVAC circular ductwork Alvin Coughenour, Vincent L. Bloom 2013-04-30