Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4512359 | Valve mechanism with replaceable seal rings | Kee W. Kim, Kenton Chickering, III | 1985-04-23 |
| 4394023 | High temperature valve stem packing with coiled graphite seal rings | — | 1983-07-19 |