Stefan Trumpi

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Ennenda, CH

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Patents Grantslast 30 patents

Information Patent Grant
Advancement of pipe elements in the ground
- Patent number 8,231,306
- Issue date Jul 31, 2012
- Stefan Trümpi
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Advancement Of Pipe Elements In The Ground
- Publication number 20070280786
- Publication date Dec 6, 2007
- Stefan Trumpi
- E21 - EARTH DRILLING MINING