Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4872936 | Polymerizable cement mixtures | — | 1989-10-10 |
| 4806381 | Polymerizable compounds containing acid and acid derivatives, mixtures containing the same, and use thereof | Helmut von Wallis, Michael Gunther | 1989-02-21 |