Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6206165 | System for promoting the returning of service carts, e.g. shopping carts, intended for transporting commodities in an activity center, e.g. shopping centers | — | 2001-03-27 |
| 5495930 | Coin-deposit lock | Bertil Engstro/ | 1996-03-05 |
| 5199544 | Coin operated lock for delivering a locking means secured in said lock | Bertil Engstrom | 1993-04-06 |
| 4474280 | Coin-operated lock for a trolley system including especially shopping and luggage trolleys | — | 1984-10-02 |
| 4474282 | Coin-operated lock for a trolley system including especially shopping and luggage trolleys | — | 1984-10-02 |