DJ

David F. Johnston

BG Bha Group: 1 patents #1 of 7Top 15%
📍 Riyadh, VA: #1 of 1 inventorsTop 100%
Overall (2005): #216,653 of 245,428Top 90%
1
Patents 2005

Issued Patents 2005

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6839251 Apparatus and method for filtering voltage for an electrostatic precipitator Michael Mahler, Terry Lewis Farmer, Robert Hummell 2005-01-04