Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5836596 | Shopping cart | — | 1998-11-17 |
| 5121823 | Coin lock for a trolley | Karl Ertle | 1992-06-16 |
| 4472908 | Automatic gate | Karl Ertle, Peter Bischof | 1984-09-25 |
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5836596 | Shopping cart | — | 1998-11-17 |
| 5121823 | Coin lock for a trolley | Karl Ertle | 1992-06-16 |
| 4472908 | Automatic gate | Karl Ertle, Peter Bischof | 1984-09-25 |