Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6138985 | Internal tank car valve with safety lock and interlocking lug | — | 2000-10-31 |
| 5931444 | Internal tank car valve with safety lock | — | 1999-08-03 |
| 5209456 | Tank valve | — | 1993-05-11 |
| 5193573 | Ball valve having replaceable seals under full service pressure | — | 1993-03-16 |
| 5170988 | Internal tank valve | — | 1992-12-15 |
| 5170819 | Valve system for mobile tank cars | — | 1992-12-15 |
| 5145151 | Internal tank valve with valve lock | — | 1992-09-08 |
| 5042776 | Internal tank valve | — | 1991-08-27 |
| 4512360 | Fabricated ball valve | — | 1985-04-23 |