Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5653192 | Livestock identification apparatus | Joseph S. Sheen, Lars Henrik Harald Andersson, Philip M. Wirth | 1997-08-05 |
| 5628284 | Livestock cutter gate apparatus | Joe S. Sheen | 1997-05-13 |