Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5316430 | Material collecting and hauling apparatus | Eugene R. Grubaugh, Thomas Pfeifer, Carroll R. Johnson | 1994-05-31 |
| 5288196 | Collecting, hauling and delivering apparatus and method | Eugene R. Grubaugh, Thomas Pfeifer, Carroll R. Johnson | 1994-02-22 |