DJ

David L. Johnson

📍 Johnston, IA: #4 of 23 inventorsTop 20%
🗺 Iowa: #89 of 1,020 inventorsTop 9%
Overall (2005): #59,265 of 245,428Top 25%
2
Patents 2005

Issued Patents 2005

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6921244 Bleed valve system 2005-07-26
D502257 Automobile air filter and freshener Kelvin B. Webster 2005-02-22