Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5630322 | Process and apparatus for heat treatment of workpieces by quenching with gases | Paul Heilmann, Friedrich Preisser | 1997-05-20 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5630322 | Process and apparatus for heat treatment of workpieces by quenching with gases | Paul Heilmann, Friedrich Preisser | 1997-05-20 |