Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6588372 | Gear drive livestock fan | Frank Gilbert Marks, Dwight Zimmerman | 2003-07-08 |
| 6578828 | Livestock cooling system | Frank Gilbert Marks | 2003-06-17 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6588372 | Gear drive livestock fan | Frank Gilbert Marks, Dwight Zimmerman | 2003-07-08 |
| 6578828 | Livestock cooling system | Frank Gilbert Marks | 2003-06-17 |