Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5147559 | Controlling cone of depression in a well by microprocessor control of modulating valve | Robert J. Kadwell | 1992-09-15 |
| 5028212 | Method and apparatus for removal of floating immiscible liquids | Robert J. Kadwell | 1991-07-02 |