Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4330326 | Method and a means for introducing close-grained carbonaceous fuels into a molten iron bath | Karl Brotzmann | 1982-05-18 |
| 4322244 | Process for feeding carbon to an iron melt in a converter | Karl Brotzmann | 1982-03-30 |