DJ

David F. Johnston

BG Bha Group: 3 patents #1 of 7Top 15%
📍 Riyadh, VA: #1 of 1 inventorsTop 100%
Overall (2003): #32,062 of 273,478Top 15%
3
Patents 2003

Issued Patents 2003

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
6628568 System and method for verification of acoustic horn performance Michael Mahler, Terry Lewis Farmer 2003-09-30
6611440 Apparatus and method for filtering voltage for an electrostatic precipitator Michael Mahler, Terry Lewis Farmer, Robert Hummell 2003-08-26
6540812 Method and system for improved rapper control Terry Lewis Farmer, Sven Richter, Michael Mahler 2003-04-01