Celle
Germany
2
2018-09-06
The entities that hold a legal rights for patent applications filed by inventor Tergeist Mathias:
Mathias Tergeist from Celle, DE has applied for patents for these inventions. The list has both pending applications and granted patents:
Method to mitigate bit induced vibrations by intentionally modifying mode shapes of drill strings by mass or stiffness changes
#2 | 2015-05-07Method to mitigate bit induced vibrations by intentionally modifying mode shapes of drill strings by mass or stiffness changes
1149118 ⎘