Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4864297 | Siren detector | J. Lloyd Hargrove | 1989-09-05 |
| 4811792 | Well tool stabilizer and method | Jeffrey J. Lembcke | 1989-03-14 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4864297 | Siren detector | J. Lloyd Hargrove | 1989-09-05 |
| 4811792 | Well tool stabilizer and method | Jeffrey J. Lembcke | 1989-03-14 |