Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6527191 | Playing cards provided with a machine-readable code | — | 2003-03-04 |
| 5743797 | Device for controlling, presenting and registering the bidding in a game of bridge | — | 1998-04-28 |
| D350781 | Deck of coded playing cards for the card game of bridge | — | 1994-09-20 |
| D350372 | Set of bidding cards for the card game of bridge | — | 1994-09-06 |