Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5352275 | Method of producing hot mix asphalt | Robert H. Nath, Robert Erickson, John Wiley, Michael Miles | 1994-10-04 |
| 4934710 | Educational game emphasizing harmony | — | 1990-06-19 |