Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4387004 | Seal for a coke oven door | — | 1983-06-07 |
| 4351398 | Well drilling apparatus | Reinout Klaar Norfolc Jaap Prins | 1982-09-28 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4387004 | Seal for a coke oven door | — | 1983-06-07 |
| 4351398 | Well drilling apparatus | Reinout Klaar Norfolc Jaap Prins | 1982-09-28 |