Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8327881 | Double seat valve apparatus | — | 2012-12-11 |
| 7047619 | Seal installation tool and method | Barry Wambold, Kirk VanAcker, Connie Mroch | 2006-05-23 |
| 6378548 | Varying size diaphragm valve assemblies utilizing diaphragm of uniform size | Gary L. Ferguson | 2002-04-30 |
| 5699825 | Double seat flow control valve | — | 1997-12-23 |
| 4723647 | Belt conveyor and feeder | Donald G. Wells | 1988-02-09 |
| 4465418 | Suspension for ring drive silo unloader | — | 1984-08-14 |
| 4442327 | Manually portable start control for electrically powered apparatus | Frank L. West | 1984-04-10 |
| 4349856 | Safety start control for electrically powered apparatus | Frank L. West | 1982-09-14 |