Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5660238 | Switch actuator and flow restrictor pilot valve assembly for measurement while drilling tools | Borislav J. Tchakarov | 1997-08-26 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5660238 | Switch actuator and flow restrictor pilot valve assembly for measurement while drilling tools | Borislav J. Tchakarov | 1997-08-26 |