Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4806394 | Method for producing a wear-resistant, titanium-carbide containing layer on a metal base | — | 1989-02-21 |
| 4794953 | Torch device with oxygen and combustion gas supply | Philippe Delaplace | 1989-01-03 |