Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6164079 | Cryogenic treatment of silicon nitride tool and machine parts | Fred J. Waldmann | 2000-12-26 |
| 6141974 | Cryogenic and heat process for treating sintered carbide metals to increase service life | Fred J. Waldmann | 2000-11-07 |