DH

Darrell E. Helton

NO Nmhg Oregon: 2 patents #9 of 46Top 20%
Overall (All Time): #2,026,487 of 4,157,543Top 50%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
9000905 Auxiliary fuel tank Lonnie R. Oxley, David Billings, Jeffrey G. Stephenson 2015-04-07
7940165 Low fuel warning systems for a motorized vehicle Lonnie R. Oxley, David Billings, Ashwani K. Bansal, Jeffrey G. Stephenson 2011-05-10