DH

Douglas Hartley

SS Sur-Gard Security Systems: 1 patents #4 of 8Top 50%
Overall (All Time): #942,000 of 4,157,543Top 25%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
D988811 Pot lid holder 2023-06-13
D980680 Pot lid holder 2023-03-14
5638428 Telecommunications management and control apparatus Phillip Berku, W. Robert Jeffcott, Kevin Orr, Marcello Ruffolo 1997-06-10
5511109 Security system using call display Doan N. Huan, Sean Bailey 1996-04-23
5427628 Solar rhyno 1995-06-27