Device for performing deep drillings and method of performing deep drillings
AssigneeGa Drilling, A.S.
InventorsIgor Ko{hacek over (c)}i{hacek over (s)}, Ivan Ko{hacek over (c)}i{hacek over (s)}, Tomá{hacek over (s)} Kri{hacek over (s)}tofi{hacek over (c)}, Du{hacek over (s)}an Ko{hacek over (c)}i{hacek over (s)}
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