L. Mark Knolle

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Marietta, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Drilling rig and methods using multiple types of drilling for insta...
- Patent number 11,821,312
- Issue date Nov 21, 2023
- Terra Sonic International, LLC
- L. Mark Knolle
- E21 - EARTH DRILLING MINING
Information Patent Grant
Sonic-powered methods for horizontal directional drilling
- Patent number 11,692,398
- Issue date Jul 4, 2023
- Terra Sonic International, LLC
- L. Mark Knolle
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
SONIC-POWERED METHODS FOR HORIZONTAL DIRECTIONAL DRILLING
- Publication number 20220127908
- Publication date Apr 28, 2022
- Terra Sonic International, LLC
- L. Mark Knolle
- E21 - EARTH DRILLING MINING
Information Patent Application
DRILLING RIG AND METHODS USING MULTIPLE TYPES OF DRILLING FOR INSTA...
- Publication number 20220065045
- Publication date Mar 3, 2022
- Terra Sonic International, LLC
- L. Mark Knolle
- E21 - EARTH DRILLING MINING