Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4934562 | Cover construction for waste containers | Stephen R. Early, Del E. Walker, Freddie L. Selby, Edward G. Spanknoble, Michael R. O'Hanlon | 1990-06-19 |
| 4635979 | Latch device for railcar hatch covers | — | 1987-01-13 |
| D268919 | Train hopper cover | Lewis H. Wiens, James R. Saylor | 1983-05-10 |
| 4378742 | Hold down bar for hopper car hatch covers | James R. Saylor, Lewis H. Wiens | 1983-04-05 |
| 4368674 | Hatch cover for railroad hopper cars | Lewis H. Wiens, James R. Saylor | 1983-01-18 |