DH

David M. Heffelfinger

📍 San Pablo, CA: #4 of 10 inventorsTop 40%
🗺 California: #14,783 of 41,698 inventorsTop 40%
Overall (2011): #323,237 of 364,097Top 90%
1
Patents 2011

Issued Patents 2011

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
7948184 Vehicle testing lamp apparatus, system, and method David A. Pringle, David McDonald, Ashot Nalbandyan 2011-05-24