DuDu{hacek over (s)}an Kocis

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Bratislava, SK

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Patents Grantslast 30 patents

Information Patent Grant
Device for performing deep drillings and method of performing deep...
- Patent number 8,944,186
- Issue date Feb 3, 2015
- GA Drilling, A.S.
- Igor Kocis
- E21 - EARTH DRILLING MINING