Hartmut Precht

Follow

Person

Dinklage, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Rock drill
- Patent number 6,446,741
- Issue date Sep 10, 2002
- Gebrueder Heller Dinklage GmbH
- Heinrich Kersten
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Drilling tool having a drill bit with primary and secondary cutting...
- Patent number 6,032,750
- Issue date Mar 7, 2000
- Gebrueder Heller Dinklage GmbH
- Heinrich Kersten
- E21 - EARTH DRILLING MINING