Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8342435 | Hammer mill hammer | Chad J. Plumb, Todd K. Plumb, Christine D. Petersen, Robert H. Knox | 2013-01-01 |
| 8104177 | Hammer mill hammer | Chad J. Plumb, Todd K. Plumb, Christine D. Petersen, Robert H. Knox | 2012-01-31 |
| 7419109 | Apparatus for attaching hammers to a hammer mill | Todd K. Plumb, Christine D. Petersen | 2008-09-02 |
| D490447 | Roll shell | Christine D. Petersen | 2004-05-25 |