Ann-Cathrin Hedlund

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Sandviken, SE

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Patents Grantslast 30 patents

Information Patent Grant
Drill rod and method of manufacture thereof
- Patent number 7,571,779
- Issue date Aug 11, 2009
- Sandvik Intellectual Property Aktiebolag
- Ann-Cathrin Hedlund
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Drill rod and method of manufacture thereof
- Publication number 20050217901
- Publication date Oct 6, 2005
- SANDVIK AB
- Ann-Cathrin Hedlund
- E21 - EARTH DRILLING MINING