Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5474128 | Telescoping conduits for increasing the fluid resistance of well production tubing inadvertently dropped in an oil or gas well | — | 1995-12-12 |
| 5372192 | Drag block for increasing the fluid resistance of well production tubing inadvertently dropped in a cased hole of an oil or gas well | — | 1994-12-13 |