Stephen L. Armell

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Loyang Crescent, SG

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Patents Grantslast 30 patents

Information Patent Grant
Well bore reamer and method
- Patent number 6,561,286
- Issue date May 13, 2003
- Richard A. Armell
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Down-hole tool hydraulic force intensifier
- Publication number 20020070015
- Publication date Jun 13, 2002
- Richard A. Armell
- E21 - EARTH DRILLING MINING
Information Patent Application
Reaming tool with radially extending blades
- Publication number 20020070052
- Publication date Jun 13, 2002
- Richard A. Armell
- E21 - EARTH DRILLING MINING
Information Patent Application
Well bore reamer and method
- Publication number 20020070051
- Publication date Jun 13, 2002
- Richard A. Armell
- E21 - EARTH DRILLING MINING