Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4938000 | Variable low-pressure sequential-return force cap lift | Rodney P. Smith | 1990-07-03 |
| 4875324 | Low pressure cap lift with hydraulic return | — | 1989-10-24 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4938000 | Variable low-pressure sequential-return force cap lift | Rodney P. Smith | 1990-07-03 |
| 4875324 | Low pressure cap lift with hydraulic return | — | 1989-10-24 |