Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6027098 | Rotary valve | — | 2000-02-22 |
| 5662308 | Expanding gate valve assembly | — | 1997-09-02 |
| 5618027 | Gate valve | — | 1997-04-08 |
| 5407176 | Back-seating of rotary valve stem | — | 1995-04-18 |
| 5342028 | Expanding valve assembly | — | 1994-08-30 |
| 5236345 | Expanding gate valve assembly | — | 1993-08-17 |
| 5205535 | Expanding gate valve assembly | — | 1993-04-27 |
| D254326 | Tongue cleaning device | — | 1980-02-26 |