DH

David Hards

HD Headwaters R & D: 1 patents #8 of 19Top 45%
Overall (All Time): #3,274,358 of 4,157,543Top 80%
1
Patents All Time

Issued Patents All Time

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