Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6638169 | Gaming machines with directed sound | William R. Wells, Harold E. Mattice, Chauncey W. Griswold | 2003-10-28 |
| 6530842 | Electronic gaming machine with enclosed seating unit | William R. Wells, Chauncey W. Griswold, Harold E. Mattice | 2003-03-11 |