Issued Patents 1997
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5647571 | Mold device for forming concrete border stones | — | 1997-07-15 |
| D380763 | Mold for forming concrete border stones | — | 1997-07-08 |
| D379359 | Mold for forming concrete hexagonal stepping stones | — | 1997-05-20 |
| D378822 | Mold for forming concrete circular stepping stones | — | 1997-04-15 |
| D377181 | Mold for forming concrete cobblestones | — | 1997-01-07 |