DB

David Bartholomew

IN Intel: 1 patents #18,218 of 30,777Top 60%
📍 Flin Flon, CA: #13 of 149 inventorsTop 9%
Overall (All Time): #1,546,947 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
8574482 Cold casting method and apparatus Brett Coates 2013-11-05
8109329 Split-coil, redundant annular coupler for wired downhole telemetry Jeff Bray 2012-02-07
D344952 Channel changer 1994-03-08