Douglas W. Davison

Follow

Person

Pearland, TX, US

People

Patents Grantslast 30 patents

Information Patent Grant
Chip resistant buttons for downhole tools having slip elements
- Patent number 5,984,007
- Issue date Nov 16, 1999
- Halliburton Energy Services, Inc.
- Yusheng Yuan
- E21 - EARTH DRILLING MINING
Information Patent Grant
Slip retaining system for downhole tools
- Patent number 5,839,515
- Issue date Nov 24, 1998
- Halliburton Energy Services, Inc.
- Yusheng Yuan
- E21 - EARTH DRILLING MINING
Information Patent Grant
Downhole tool apparatus and method of limiting packer element extru...
- Patent number 5,701,959
- Issue date Dec 30, 1997
- Halliburton Company
- Donald F. Hushbeck
- E21 - EARTH DRILLING MINING