JF

James T. Farrow

DI Dresser Industries: 1 patents #301 of 787Top 40%
📍 Grand Prairie, TX: #44 of 352 inventorsTop 15%
🗺 Texas: #24,375 of 125,132 inventorsTop 20%
Overall (All Time): #836,991 of 4,157,543Top 25%
6
Patents All Time

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
10066463 Plunger assembly with internal dart passage 2018-09-04
9951590 Plunger assembly with dampening system 2018-04-24
9945209 Plunger assembly with expandable seal 2018-04-17
9863218 Plunger assembly with coated dart and wear pads 2018-01-09
9863223 Plunger assembly with dual dart system 2018-01-09
4199856 Method of providing lubricant volume displacement system for a rotary rock bit William D. Vanderford, Ernest E. Taylor 1980-04-29