Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4776989 | Method and apparatus for liquid feed to liqiud distributors in fluid-liquid contacting towers | Stephen Harper | 1988-10-11 |
| 4689183 | Ultra low flow rate liquid redistributor assembly for use in a liquid-vapor contact tower | Stephen Harper | 1987-08-25 |