Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6116679 | Curtain side truck body and/or trailer side rail-to-post connection | — | 2000-09-12 |
| 4812113 | Mold assembly for pre-stressed concrete railroad ties | — | 1989-03-14 |
| 4781875 | Manufacture of pre-stressed concrete railroad ties | — | 1988-11-01 |
| 4773840 | Manufacture of pre-stressed concrete railroad ties | — | 1988-09-27 |
| 4712735 | Prestressed concrete cross tie having increased fatigue life | — | 1987-12-15 |
| 4696238 | End structure for railway car | Robert Billingsley, Walter E. O'Leary, John A. Krug | 1987-09-29 |
| 4690071 | Truss end structure for stub sill hopper cars | Robert Billingsley | 1987-09-01 |
| 4504047 | Scissor support for welding tank sections | — | 1985-03-12 |
| 4368927 | Hand brake release apparatus | Robert Billingsley, James R. Zimmerle | 1983-01-18 |
| 4368928 | Inertial hand brake release apparatus | Robert Billingsley, James R. Zimmerle | 1983-01-18 |
| 4353310 | Cushioned railway car center plate assembly | — | 1982-10-12 |
| 4353311 | Railway car center plate assembly | — | 1982-10-12 |
| 4206709 | Hopper car for liquid unit-train service | Dallas W. Rollins | 1980-06-10 |