Issued Patents All Time
Showing 51–63 of 63 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5387015 | Hopper tee | — | 1995-02-07 |
| 5360030 | Butterfly valve incorporating sleeve seals | — | 1994-11-01 |
| 5207411 | Butterfly valve assembly | — | 1993-05-04 |
| 5067856 | In-line air filter for dry bulk tank trailers | — | 1991-11-26 |
| 5053063 | Dust filtering and collection system | — | 1991-10-01 |
| 5030037 | Porous filter pad for fluid pressure conveying systems | — | 1991-07-09 |
| 5017053 | Aeration device for bulk material containers | — | 1991-05-21 |
| 4909814 | Dust filtering and collection system | — | 1990-03-20 |
| 4889318 | Molded hopper tee | — | 1989-12-26 |
| 4848396 | Cast hopper tee | — | 1989-07-18 |
| 4822001 | Positive fluid seal butterfly valve | — | 1989-04-18 |
| D297678 | Cast hopper tee | — | 1988-09-13 |
| 4699357 | Reinforced industrial butterfly valve | — | 1987-10-13 |