Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6921231 | Segmental retaining wall system | Thomas L. Rainey, Svenn Borgersen | 2005-07-26 |
| 6862856 | Corner block for use in forming a corner of a segmental retaining wall | Donal Jay Armstrong | 2005-03-08 |
| 6758636 | Segmental retaining wall system | Thomas L. Rainey, Svenn Borgersen | 2004-07-06 |
| 6612784 | Modular retaining wall system | Thomas L. Rainey, Svenn Borgersen | 2003-09-02 |
| 6318934 | Segmental retaining wall system | Sven Borgersen, Thomas L. Rainey | 2001-11-20 |