Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6371702 | Spade blade drill and method of making | A. Bruce DeWald, Jr. | 2002-04-16 |
| 5816754 | Elongated drill with replaceable cutting inserts | — | 1998-10-06 |
| 5092718 | Drill with replaceable cutting inserts | — | 1992-03-03 |
| 4412763 | Drill with single cutter | — | 1983-11-01 |