DH

Douglas B. Hughes

📍 Schreiber, CA: #467 of 2,446 inventorsTop 20%
Overall (All Time): #1,677,441 of 4,157,543Top 45%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4575614 Pipe thawing apparatus — 1986-03-11
D266235 Combined pipe and hydrant thawing and electric generator trailer — 1982-09-21
4314140 Pipe thawing apparatus — 1982-02-02