DL

Daniel H. Longwell

AG Atp Oil & Gas: 3 patents #4 of 5Top 80%
📍 Houston, TX: #6,659 of 21,073 inventorsTop 35%
🗺 Texas: #40,946 of 125,132 inventorsTop 35%
Overall (All Time): #1,558,708 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
7886828 Floating vessel for supporting top tension drilling and production risers Robert Magee Shivers, III, David Trent 2011-02-15
7654327 Tensioner assembly Robert Magee Shivers, III, David Trent 2010-02-02
7588393 Method for supporting top tension drilling and production risers on a floating vessel Robert Magee Shivers, III, David Trent 2009-09-15