Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4808268 | Apparatus for cleaning coke oven leveling doors and leveling door frames | — | 1989-02-28 |
| 4359364 | Gas-collecting apparatus for coking installation | Karl Gregor | 1982-11-16 |
| 4340987 | Element for cleaning coking-oven doors and doorjamb | Karl Gregor | 1982-07-27 |
| 4225393 | Door-removal device | Karl Gregor | 1980-09-30 |