Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5285883 | Automatic payment device and method for recognizing coins | Son Le Hong | 1994-02-15 |
| 5238446 | Corn separation device | Son Le Hong | 1993-08-24 |
| 5232399 | Devices for the separation of coins, token and the like | Son Le Hong | 1993-08-03 |
| 5195626 | Device for checking coins | Son Le Hong | 1993-03-23 |