Alf Erik Berle

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Radal, NO

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for alternating between coring and drilling wi...
- Patent number 11,891,858
- Issue date Feb 6, 2024
- COREALL AS
- Per Erik Berger
- E21 - EARTH DRILLING MINING
Information Patent Grant
Core drilling apparatus and method for converting between a core dr...
- Patent number 11,131,147
- Issue date Sep 28, 2021
- Coreall AS
- Per Erik Berger
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
METHOD AND APPARATUS FOR ALTERNATING BETWEEN CORING AND DRILLING WI...
- Publication number 20220065046
- Publication date Mar 3, 2022
- COREALL AS
- Per Erik Berger
- E21 - EARTH DRILLING MINING