Issued Patents 1982
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4327768 | Bottom outlet valve open and closed indicator | — | 1982-05-04 |
| 4326557 | Top operated tank car bottom outlet valve assembly installed from the bottom of the car | — | 1982-04-27 |
| 4313591 | Combination top operable and bottom operable tank lading valve assembly | Richard J. Wempe | 1982-02-02 |