|
GB9706997D0
|
|
Reverse circulating nozzled coke drilling bit
|
|
GB9609041D0
|
|
Drilling fluid displacement tool
|
|
GB9518898D0
|
|
Antithetic coupled drive motor
|
|
GB9509373D0
|
|
Antithetic drive motor
|
|
GB9503391D0
|
|
Reactive torque drilling bit
|
|
GB9412027D0
|
|
Hinged vane motor
|
|
GB9321242D0
|
|
Wing motor
|
|
US5460496A
|
|
Wing motor having non-radial roller slats
|
|
GB9217136D0
|
|
Wing motor
|
|
GB9122201D0
|
|
Wing motor
|
|
GB9102320D0
|
|
Down-hole wing motor
|
|
GB8909503D0
|
|
Positive displacement"wing motor"
|
|
GB8902838D0
|
|
Positive displacement"wing motor"
|
