Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4907909 | Paving stone set | — | 1990-03-13 |
| 4896999 | Set of concrete building blocks for constructing a dry wall | — | 1990-01-30 |
| 4869660 | Apparatus for fabrication of concrete brick | — | 1989-09-26 |
| 4496266 | Curved like paving stone element for use in setting a curved paving | — | 1985-01-29 |
| 4362426 | Road surface comprising individual interconnected elements | — | 1982-12-07 |