Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6691828 | Scaffold stair | Yates Westley Hayman | 2004-02-17 |
| 6415891 | Scaffold stair | Yates Westley Hayman | 2002-07-09 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6691828 | Scaffold stair | Yates Westley Hayman | 2004-02-17 |
| 6415891 | Scaffold stair | Yates Westley Hayman | 2002-07-09 |