Paul Donald Roberts

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Spring, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Adjustable bent housing for directional drill string
- Patent number 9,670,731
- Issue date Jun 6, 2017
- Paul Donald Roberts
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Universal joint for downhole motor drive
- Publication number 20170082152
- Publication date Mar 23, 2017
- Timothy Edward LaGrange
- E21 - EARTH DRILLING MINING
Information Patent Application
Adjustable bent housing for directional drill string
- Publication number 20150034390
- Publication date Feb 5, 2015
- Paul Donald Roberts
- E21 - EARTH DRILLING MINING