DH

David Hards

HD Headwaters R & D: 1 patents #3 of 7Top 45%
📍 Hollis, NH: #14 of 45 inventorsTop 35%
🗺 New Hampshire: #379 of 1,252 inventorsTop 35%
Overall (2011): #323,334 of 364,097Top 90%
1
Patents 2011

Issued Patents 2011

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
8083840 High cleaning efficiency room air cleaner with slim profile Matthew T. R. Bailey, Ross L. Cowie, Rudy A. Vandenbell 2011-12-27