Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5735639 | Modular mobile safety structure for containment and handling of hazardous materials | Edward A. Payne, Norman S. Van Valkenburgh | 1998-04-07 |
| H1587 | Trailer for transporting a safety structure which is used for the | Norman S. Van Valkenburgh | 1996-09-03 |
| 5511908 | Mobile safety structure for containment and handling of hazardous materials | Norman S. Van Valkenburgh, Edward A. Payne | 1996-04-30 |
| 5356206 | Hazardous material storage enclosure unit with secondary containment shelf | — | 1994-10-18 |