L. Mark Knolle

TITerra Sonic International: 2 patents #1 of 1Top 100%

Marietta, OH: #1 of 2 inventorsTop 50%

Ohio: #1,115 of 6,963 inventorsTop 20%

Overall (2023): #134,082 of 537,848Top 25%

2 Patents 2023

Issued Patents 2023

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
11821312	Drilling rig and methods using multiple types of drilling for installing geothermal systems	—	2023-11-21
11692398	Sonic-powered methods for horizontal directional drilling	—	2023-07-04