DW

Douglas A. Watson

Overall (All Time): #1,131,293 of 4,157,543Top 30%
4
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
11725457 Drilling apparatus and related method Joshua N. Keck 2023-08-15
11414929 Drilling apparatus and related method Joshua N. Keck 2022-08-16
10890033 Kelly bar with locking feature, related system and method Mark Crosby 2021-01-12
7093679 Foundation drilling apparatus and method with continuously variable hydraulic differential rotary table 2006-08-22