DH

Doan N. Huan

SS Sur-Gard Security Systems: 1 patents #4 of 8Top 50%
📍 Mount Royal, CA: #364 of 770 inventorsTop 50%
Overall (All Time): #3,741,279 of 4,157,543Top 90%
1
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Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5511109 Security system using call display Douglas Hartley, Sean Bailey 1996-04-23