Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5080442 | Collector cart | Charles W. Doering | 1992-01-14 |
| 4836610 | Collector cart | Charles W. Doering, Henry L. Johnson, Bruce A. Thomas | 1989-06-06 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5080442 | Collector cart | Charles W. Doering | 1992-01-14 |
| 4836610 | Collector cart | Charles W. Doering, Henry L. Johnson, Bruce A. Thomas | 1989-06-06 |