Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5353552 | Root-strength drill bit and method of making | — | 1994-10-11 |
| 5184926 | Root-strength drill bit and method of making | — | 1993-02-09 |
| 5102271 | Collet-wear reducing drill bit | — | 1992-04-07 |
| 5071005 | Multi-carrier drill bit container | Michio Ito | 1991-12-10 |
| 4598822 | Drill bit carrying case | — | 1986-07-08 |