DW

David Michael Walden

DT Davidson Hydrant Technologies: 4 patents #3 of 8Top 40%
Overall (All Time): #1,244,449 of 4,157,543Top 30%
4
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
7775231 Retrofitting a fire hydrant with a replacement hydrant body containing a secondary valve Tom Davidson, David Phillips, Anthony Ferrari 2010-08-17
7575017 Wet barrel fire hydrant system with second valve Thomas Davidson, Anthony Ferrari, David Phillips, O. G. Sims, Matthew Jesse Rose 2009-08-18
7428910 Breathable fire hydrant rod Tom Davidson, Anthony Ferrari, Matthew Jesse Rose 2008-09-30
7240688 Retrofitting a fire hydrant with secondary valve Thomas Davidson, Anthony Ferrari, Matthew Jesse Rose 2007-07-10