Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4323718 | Arc furnace roof | Gerardus J. W. Dreessen, Jacob W. H. Groeneveld, Robert Queck, Heinrich Thome, Gerrit J. Willemsen | 1982-04-06 |
OB
Otto Buhring
Overall (1982): #40,108 of 81,411Top 50%
1
Patents 1982