Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6331825 | Mobile locator system | David L. Ladner, Ronald Edward Konezny | 2001-12-18 |
| 6075458 | Locator device | David L. Ladner | 2000-06-13 |
| 5594425 | Locator device | David L. Ladner | 1997-01-14 |