Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7275488 | Auto rack railway car | James E. Black, Jr., Mark L. Litherland, Michael J. Rench, James C. Robertson, Ralph H. Schorr | 2007-10-02 |
| 6289822 | Auto rack railway car | James E. Black, Jr., Mark L. Litherland, Michael J. Rench, James C. Robertson, Ralph H. Schorr | 2001-09-18 |
| 5785455 | Shore seal tidal barrier containment boom | — | 1998-07-28 |
| 5765486 | Auto rack railway car | James E. Black, Jr., Mark L. Litherland, Michael J. Rench, James C. Robertson, Ralph H. Schorr | 1998-06-16 |