DD

Dennis B. Dop

UN Unknown: 2 patents #12,644 of 83,584Top 20%
📍 Antioch, IL: #87 of 214 inventorsTop 45%
🗺 Illinois: #34,584 of 84,256 inventorsTop 45%
Overall (All Time): #2,299,655 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5185779 Cellular alarm backup system Michael Freitag, Norbert W. Zawacki 1993-02-09
4887290 Cellular alarm backup system Michael Freitag, Norbert W. Zawacki 1989-12-12