Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8079774 | Traffic barrier with quick-bolt connection system | Randall H. House, Jorge D. Hinojosa, Randall Frerich | 2011-12-20 |
| 5588786 | Combination retaining wall and method of construction | Randall H. House, Johann Hofmann | 1996-12-31 |
| 5509249 | Combination column and panel barrier system and method of construction | Randall H. House, Johann Hofmann | 1996-04-23 |
| 5471811 | Combination traffic barrier and retaining wall and method of construction | Randall H. House, Johann Hofmann | 1995-12-05 |
| 5400563 | Combination column and panel barrier system and method of construction | Randall H. House, Johann Hofmann | 1995-03-28 |