Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5306477 | Use of wrought and cast materials and welding fillers for making and using hot concentrated sulphuric acid or oleum | Elmar-Manfred Horn | 1994-04-26 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5306477 | Use of wrought and cast materials and welding fillers for making and using hot concentrated sulphuric acid or oleum | Elmar-Manfred Horn | 1994-04-26 |