Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4756430 | Gravity feed shelf | William S. Spamer | 1988-07-12 |
| 4706820 | Gravity feed shelf for store gondolas | William S. Spamer | 1987-11-17 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4756430 | Gravity feed shelf | William S. Spamer | 1988-07-12 |
| 4706820 | Gravity feed shelf for store gondolas | William S. Spamer | 1987-11-17 |