DH

Douglas B. Hughes

📍 Schreiber, CA: #2 of 58 inventorsTop 4%
Overall (1982): #14,928 of 81,411Top 20%
2
Patents 1982

Issued Patents 1982

Showing 1–2 of 2 patents

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