Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6936179 | Method and apparatus for adding oxygen to drinking water | — | 2005-08-30 |
| 4976210 | Method and apparatus for treating hazardous waste materials | — | 1990-12-11 |
| 4522258 | Unitized well testing apparatus for use in hostile environments | — | 1985-06-11 |
| 4520994 | Sub-surface safety gate valve | — | 1985-06-04 |
| 4392631 | Sub-surface safety gate valve | — | 1983-07-12 |