Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859122 | Polygonal cutting insert | John Patterson, Thomas J. Bernadic, Yefim Val, Karl Katbi, Charles E. Zimmerman | 1989-08-22 |
| 4856942 | Polygonal cutting insert | Thomas J. Bernadic, John Patterson | 1989-08-15 |
| 4854785 | Scalloped threader cutting insert | Thomas J. Bernadic | 1989-08-08 |
| 4846609 | Polygonal cutting insert | Thomas J. Bernadic, John Patterson, Karl Katbi, Charles E. Zimmerman, Yefim Val | 1989-07-11 |