CD

Christopher L. Drenth

LT Longyear Tm: 2 patents #1 of 5Top 20%
Overall (2023): #168,023 of 537,848Top 35%
2
Patents 2023

Issued Patents 2023

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
11746600 Continuous sampling drill bit Andrew Robert Corona 2023-09-05
11578552 Reverse-circulation drilling assemblies and methods of using same Anthony Lachance 2023-02-14