Roger P. Bartel

Follow

Person

Houston, TX, US

People

Patents Grantslast 30 patents

Information Patent Grant
Variable output rotary power generator
- Patent number 6,191,561
- Issue date Feb 20, 2001
- Dresser Industries, Inc.
- Roger P. Bartel
- E21 - EARTH DRILLING MINING
Information Patent Grant
Electrical connector having electrically conductive elastomer cover...
- Patent number 5,174,765
- Issue date Dec 29, 1992
- Barvid Technology Inc.
- Joseph M. Williams
- E21 - EARTH DRILLING MINING