Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6774171 | Magnetic composition | Jeffrey R. Apfel | 2004-08-10 |
| 6710115 | Sealants | David Charles Carlson, Thomas Guenther | 2004-03-23 |
| 6706802 | Sealants | David Charles Carlson, Thomas Guenther | 2004-03-16 |