Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D352559 | Paving stone | Ronald G. Krueger | 1994-11-15 |
| D349967 | Paving stone | Ronald G. Krueger | 1994-08-23 |
| D348739 | Paving stone unit | Ronald G. Krueger | 1994-07-12 |
| 5163777 | Cobble stone kit | Ronald G. Krueger | 1992-11-17 |