Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5748906 | Electronic telephone directory with interchangeable listings | — | 1998-05-05 |
| 5737610 | System and method for providing data and program code to a card for use by a reader | John Edward Matlock, Roy David Pringle | 1998-04-07 |
| 4820408 | Double valve apparatus | — | 1989-04-11 |