Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4423994 | Drilling rig equipped with pairs of block and tackle systems | Louis Barber | 1984-01-03 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4423994 | Drilling rig equipped with pairs of block and tackle systems | Louis Barber | 1984-01-03 |