Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5643677 | Aminoplast/polyurethane wear layer for PVC support surface | Mary B. Grubb, Claude R.. Rupp, William T. Sigman | 1997-07-01 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5643677 | Aminoplast/polyurethane wear layer for PVC support surface | Mary B. Grubb, Claude R.. Rupp, William T. Sigman | 1997-07-01 |