Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6215978 | Position-sensitive educational product | Patrick Rome, Larry D. Thomas | 2001-04-10 |
| 5545890 | Apparatus and method for storing and reading data | Richard A. Houghton | 1996-08-13 |
| 5451764 | Apparatus and method for storing and reading data | Richard A. Houghton | 1995-09-19 |