ANDREA JULIA EWALD

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Olsberg, DE

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Patents Grantslast 30 patents

Information Patent Grant
Method of multistage manufacturing a ground bore
- Patent number 7,891,439
- Issue date Feb 22, 2011
- TRACTO-TECHNIK GmbH & Co. KG
- Andrea Julia Ewald
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
METHOD OF MULTISTAGE MANUFACTURING A GROUND BORE
- Publication number 20080236892
- Publication date Oct 2, 2008
- Tracto-Technik GmbH & Co. KG
- ANDREA JULIA EWALD
- E21 - EARTH DRILLING MINING