Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5647823 | Therapeutic apparatus for exercising the human knee | — | 1997-07-15 |
| 5613680 | Game card and system of authorizing game card | David Henry Groves, Martin F. Hemy, Virna A. Uliana | 1997-03-25 |