Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4860875 | Roll-block and to a roll-way assembled from roll blocks | — | 1989-08-29 |
| 4744190 | Spacing retainer including locking means for reinforcements | Andreas Holterhus | 1988-05-17 |
| 4596103 | Stone set for vertical wall assemblies | — | 1986-06-24 |