| Withdrawn Patents |
| Grant Date | Patent Number |
| 1997-04-15 | 5,619,761 |
| 1997-04-15 | 5,619,924 |
| 1997-04-15 | 5,619,994 |
| 1997-04-15 | 5,620,006 |
| 1997-04-15 | 5,620,007 |
| 1997-04-15 | 5,620,164 |
| 1997-04-15 | 5,620,184 |
| 1997-04-15 | 5,620,294 |
| 1997-04-15 | 5,620,360 |
| 1997-04-15 | 5,620,401 |
| 1997-04-15 | 5,620,534 |
| 1997-04-15 | 5,620,640 |
| 1997-04-15 | 5,620,653 |
| 1997-04-15 | 5,621,014 |
| 1997-04-15 | 5,621,048 |
| 1997-04-15 | 5,621,049 |
| 1997-04-15 | 5,621,092 |
| 1997-04-15 | 5,621,534 |
| 1997-04-15 | 5,621,557 |
| 1997-04-15 | 5,621,642 |
| 1997-04-15 | 5,621,673 |
| 1997-04-15 | 5,621,688 |
| 1997-04-15 | 5,621,754 |
| 1997-04-15 | 5,621,808 |
