Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5681065 | Recyclable instant scratch-off lottery ticket with improved security to prevent unauthorized detection of lottery indicia | Louis Rua, Jr., Stephen E. Martin | 1997-10-28 |
| 5611972 | Devices and related method for the selective exposure of microencapsulated liquids | Hung-Ya Chao | 1997-03-18 |