Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5117858 | Top entry ball valves with cam adjustable seats | Brian J. Caprera | 1992-06-02 |
| 5074522 | Ball valve having improved inherent rangeability | David C. Reynolds | 1991-12-24 |
| 4531273 | Method for fabricating graphite filled sintered metal seats for ball valves | Richard T. Smith | 1985-07-30 |