Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6651957 | Tractrix valve | Eugene Chisely | 2003-11-25 |
| 6484999 | Plug valve internal pressure balancing | Eugene Chisely | 2002-11-26 |
| 6170962 | Dual compound reflector for fluorescent light fixtures | — | 2001-01-09 |
| 6164798 | Asymmetrical compound reflectors for fluorescent light fixtures | — | 2000-12-26 |
| 6007220 | Reflectors for fluorescent light fixtures | — | 1999-12-28 |
| 5601276 | Retrofit valve stem seal assembly | — | 1997-02-11 |
| 5044606 | Valve stem and packing assembly | — | 1991-09-03 |
| 4878652 | Plug valve | — | 1989-11-07 |