Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6681542 | Stair block for use in landscaping and method for use thereof | — | 2004-01-27 |
| 6428726 | Method for constructing block for staircase | — | 2002-08-06 |
| D441464 | Stair block for use in landscaping | — | 2001-05-01 |
| D350402 | Retaining wall block | Kevin Ireland, William Harrington | 1994-09-06 |