Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4795725 | Method for the manufacture of refractory bricks containing CaO | Jaap H. Addink, Adam Steen, Hendrik M. Verhoog, Jurrie De Boer | 1989-01-03 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4795725 | Method for the manufacture of refractory bricks containing CaO | Jaap H. Addink, Adam Steen, Hendrik M. Verhoog, Jurrie De Boer | 1989-01-03 |