Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5027902 | Self-cycling pump apparatus and method | William D. Dickinson | 1991-07-02 |
| 5028213 | Convertible and variable-length groundwater devices, components therefor, and methods of constructing and utilizing same | William D. Dickinson | 1991-07-02 |
| 4869371 | Pump components for building pump, and methods of constructing and using same | William D. Dickinson | 1989-09-26 |
| 4749337 | Reciprocating bladder pump, and methods of constructing and utilizing same | W. David Dickinson | 1988-06-07 |