Barrett Machine Works

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Bellaire, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Formation sampling bullet and cables therefor
- Patent number 4,750,570
- Issue date Jun 14, 1988
- Barrett Machine Works
- Bracell P. Barrett
- E21 - EARTH DRILLING MINING
Information Patent Grant
Core sample taking bullet construction
- Patent number 4,702,327
- Issue date Oct 27, 1987
- Barrett Machine Works
- Bracell P. Barrett
- E21 - EARTH DRILLING MINING
Information Patent Grant
Formation sampling bullet
- Patent number 4,569,403
- Issue date Feb 11, 1986
- Barrett Machine Works
- Bracell P. Barrett
- E21 - EARTH DRILLING MINING