DH

Douglas W. Hartford

AG Amesbury Group: 1 patents #1 of 7Top 15%
📍 Sandown, NH: #4 of 7 inventorsTop 60%
🗺 New Hampshire: #146 of 683 inventorsTop 25%
Overall (1997): #158,367 of 185,788Top 90%
1
Patents 1997

Issued Patents 1997

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5607629 Process for extruding low density foam using water as a blowing agent Alan J. DeMello, Peter Mertinooke, Dan C. Muessel, Louis Halberstadt 1997-03-04