Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6805332 | Inflatable seat valve | — | 2004-10-19 |
| 5642751 | Valve assembly | — | 1997-07-01 |
| 5589079 | Crystal recovery method employing a rotary vacuum filtration drum with valved hopper cake treatment means | David B. Park | 1996-12-31 |
| 5470473 | Rotary vacuum filtration drum with valved hopper cake treatment means | David B. Park | 1995-11-28 |
| 4834587 | Pneumatic conveying system | Brian Snowdon | 1989-05-30 |