Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7033116 | Post-tensioned rammed earth construction | Joseph Grill | 2006-04-25 |
| 5456050 | System to prevent spread of fire and smoke through wall-breaching utility holes | — | 1995-10-10 |
| 5240058 | Smoke containment curtain system and method of installation | — | 1993-08-31 |