Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4425474 | Pulp-insulated conductor cable | Helmut Durr | 1984-01-10 |
| 4276870 | Fireplace device | — | 1981-07-07 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4425474 | Pulp-insulated conductor cable | Helmut Durr | 1984-01-10 |
| 4276870 | Fireplace device | — | 1981-07-07 |