Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885881 | Bottom seal for L-pad dock shelter | — | 1989-12-12 |
| 4873800 | Loading dock seal | John A. Frommelt | 1989-10-17 |
| 4799341 | Wedge seal for loading dock shelter | John A. Frommelt | 1989-01-24 |