Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869752 | Method for preventing the corrosion of steel structures or steel reinforcements of buildings | — | 1989-09-26 |
| 4869753 | Method for repairing the near-surface layers of buildings reinforced with constructional steel | — | 1989-09-26 |
| 4867791 | Process for subsurface reconstruction of buildings reinforced with constructional steel | — | 1989-09-19 |