RD

Roy K. Darlington

BT Baroid Technology: 1 patents #36 of 87Top 45%
NI Nl Industries: 1 patents #92 of 213Top 45%
Overall (All Time): #2,313,979 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4987960 Well fluid and test method 1991-01-29
4465598 Method of treating well servicing fluids George Henry, Jack L. Lowell 1984-08-14