Issued Patents All Time
Showing 26–34 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10130869 | Scratch-off games with variable reveal feature | Kenneth E. Irwin, Jr. | 2018-11-20 |
| 8177136 | Embedded optical signatures in documents | Gary R. Streeter, Kenneth E. Irwin, Jr. | 2012-05-15 |
| 7837117 | Embedded optical signatures in documents | Gary R. Streeter, Kenneth E. Irwin, Jr. | 2010-11-23 |
| 7611065 | Lottery ticket bar code | William F. Behm | 2009-11-03 |
| 7322529 | Lottery ticket bar code | William F. Behm | 2008-01-29 |
| 7252222 | Embedded optical signatures in documents | Gary R. Streeter, Kenneth E. Irwin, Jr. | 2007-08-07 |
| 7073720 | Lottery ticket bar code | William F. Behm | 2006-07-11 |
| 6736324 | Lottery ticket bar code | William F. Behm | 2004-05-18 |
| 5791990 | Lottery system | J. Michael Schroeder, Mark Klingler, Deborah G. Davidson | 1998-08-11 |