Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4599948 | Railway hopper gate locking assembly | — | 1986-07-15 |
| 4544072 | Uncoupling device which complies with AAR specification | — | 1985-10-01 |
| 4528913 | Gravity outlet sliding gate seal | — | 1985-07-16 |
| 4348964 | Sliding sill low friction supporting plate assembly | — | 1982-09-14 |
| 4212333 | Quick fill/empty tank car system | — | 1980-07-15 |
| 4198032 | Bottom operable tank car lading valve assembly which does not require a skid | David P. Hillstead, Gunter R. Behle | 1980-04-15 |