Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4498688 | Shopping cart incorporating removable skid, runner or ski attachment | Donald N. Walters | 1985-02-12 |
| 4320904 | Skid attachment for shopping carts | Donald N. Walters | 1982-03-23 |