Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D435303 | Fluid-containment wall segment | Dennis L. Peppard, Peter J. Schulte, Gary Zitterkope, Randal G. Hebbert, Sheldon S. Wood +2 more | 2000-12-19 |
| D424708 | Fluid-containment wall segment | Dennis L. Peppard, Peter J. Schulte, Gary Zitterkopf, Randal G. Hebbert, S. Sheldon Wood +2 more | 2000-05-09 |