Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6494338 | Hatch cover gasket | — | 2002-12-17 |
| D340207 | Exterior surface of a double vented hatch cover | — | 1993-10-12 |
| 5064089 | Vented hatch cover | — | 1991-11-12 |
| 5060579 | Sliding hopper outlet gate with plastic upper surface for smooth sliding and for sealing the outlet | James W. Johnson, Wayne A. Rhodes, Roy W. Miller | 1991-10-29 |
| 5035185 | Outlet gate pan gasket for hopper cars | — | 1991-07-30 |
| 5011038 | Hopper car inlet opening protector | — | 1991-04-30 |
| 4819830 | Vented hatch cover | — | 1989-04-11 |