Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4865503 | Device for joining together building units | — | 1989-09-12 |
| 4865504 | Device for joining together building units | — | 1989-09-12 |
| 4812098 | Device for joining together building units | — | 1989-03-14 |
| 4362416 | Extension joint for concrete poles | — | 1982-12-07 |
| 4362417 | Extension joint for concrete piles | Markku Vesa | 1982-12-07 |