Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE36817 | Method and apparatus for drilling and enlarging a borehole | Paul E. Pastusek | 2000-08-15 |
| 5497842 | Reamer wing for enlarging a borehole below a smaller-diameter portion therof | Paul E. Pastusek | 1996-03-12 |