Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5646404 | Electronic grain probe insect counter (EGPIC) | Carl A. Litzkow, Dennis Shuman, James A. Coffelt | 1997-07-08 |
| 5594654 | Beneficial insect counting and packaging device | Dennis Shuman, Carl A. Litzkow, James A. Coffelt, Frederick L. Petitt, David O. Wietlisbach | 1997-01-14 |