Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8104430 | Climbing resistant pole assembly | — | 2012-01-31 |
| 4961293 | Precast, prestressed concrete secondary containment vault | Randall H. House, Jesse Covarrubias, Johann Hofmann | 1990-10-09 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8104430 | Climbing resistant pole assembly | — | 2012-01-31 |
| 4961293 | Precast, prestressed concrete secondary containment vault | Randall H. House, Jesse Covarrubias, Johann Hofmann | 1990-10-09 |