Alexander Stauffer

Follow

Person

Walliswil, CH

People

Patents Grantslast 30 patents

Information Patent Grant
Drill head and device with a sliding contact electrical connection...
- Patent number 9,840,894
- Issue date Dec 12, 2017
- TERRA AG FÜR TIEFBAUTECHNIK
- Dietmar Jenne
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
DRILL HEAD AND DEVICE FOR DRILLING A BORE IN THE GROUND
- Publication number 20150275626
- Publication date Oct 1, 2015
- TERRA AG
- Dietmar Jenne
- E21 - EARTH DRILLING MINING