Issued Patents 2002
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6417968 | Diffractive surface pattern | Wayne Robert Tompkin | 2002-07-09 |
| 6369947 | Surface pattern | Wayne Robert Tompkin | 2002-04-09 |
| 6365907 | Device for recognizing diffraction optical markings | Wayne Robert Tompkin | 2002-04-02 |
| 6359734 | Surface pattern | Wayne Robert Tompkin | 2002-03-19 |