Grant Norman Colbert

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Fredericktown, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Method for introducing and blowing rock dust and device for carryin...
- Patent number 7,048,340
- Issue date May 23, 2006
- Voest-Alpine Bergtechnik
- Egmont Lammer
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Method for introducing and blowing rock dust and device for carryin...
- Publication number 20040145231
- Publication date Jul 29, 2004
- VOEST-ALPINE Bergtechnik Gesellschaft m.b.H.
- Egmont Lammer
- E21 - EARTH DRILLING MINING