Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5638887 | Tumbling unit having cylindrical liner | — | 1997-06-17 |
| 5638890 | Interlocking liner for a casting shake-out unit | Charles J. Didion | 1997-06-17 |
| 5613902 | Sand reclaimer | Charles J. Didion | 1997-03-25 |