Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4640372 | Diverter including apparatus for breaking up large pieces of formation carried to the surface by the drilling mud | — | 1987-02-03 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4640372 | Diverter including apparatus for breaking up large pieces of formation carried to the surface by the drilling mud | — | 1987-02-03 |