Roy Powell

Follow

Person

Estes Park, CO, US

People

Patents Grantslast 30 patents

Information Patent Grant
Downhole tool
- Patent number 7,252,150
- Issue date Aug 7, 2007
- Smith International, Inc.
- Andrew McPherson Downie
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Earth boring tool
- Publication number 20060237234
- Publication date Oct 26, 2006
- Dennis Tool Company
- Mahlon D. Dennis
- E21 - EARTH DRILLING MINING
Information Patent Application
Downhole tool
- Publication number 20040251051
- Publication date Dec 16, 2004
- Andrew McPherson Downie
- E21 - EARTH DRILLING MINING