| 6607030 |
Fluid-driven alternator having an internal impeller |
William H. Bauer, Edward C. Fraser |
2003-08-19 |
| 5333686 |
Measuring while drilling system |
Susanne F. Vaughan |
1994-08-02 |
| 5027129 |
Gimballed antenna |
Louis H. Rorden, Neil H. Akkerman |
1991-06-25 |
| 5008664 |
Apparatus for inductively coupling signals between a downhole sensor and the surface |
Edward C. Fraser, Lawrence R. Bulduc |
1991-04-16 |
| 4926188 |
Gimballed antenna |
Louis H. Rorden, Neil H. Akkerman |
1990-05-15 |
| 4891734 |
Vibration mount for electronic assemblies |
John L. Marsh |
1990-01-02 |
| 4823125 |
Method and apparatus for stabilizing a communication sensor in a borehole |
Louis H. Rorden |
1989-04-18 |
| 4617960 |
Verification of a surface controlled subsurface actuating device |
— |
1986-10-21 |
| 4601100 |
Method for making logging sleeve |
Christopher E. Koch |
1986-07-22 |
| 4494072 |
Well logging apparatus with replaceable sensor carrying insulating sleeve disposed in rotation restrained position around a drill string |
John D. Jeter |
1985-01-15 |
| 4483393 |
Well logging apparatus and method for making same |
Christopher E. Koch |
1984-11-20 |
| 4356629 |
Method of making well logging apparatus |
John D. Jeter |
1982-11-02 |
| 4336564 |
Solenoid control circuit |
Waldemar S. Wisniewski |
1982-06-22 |
| 4216536 |
Transmitting well logging data |
— |
1980-08-05 |