Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11268265 | Booster pump and backflow preventer | — | 2022-03-08 |
| 6659126 | Backflow preventor with adjustable outflow direction | Charles W. Dunmire, Richard D. Fields | 2003-12-09 |
| 5503176 | Backflow preventor with adjustable cutflow direction | Charles W. Dunmire, Richard D. Fields | 1996-04-02 |
| 5385166 | Backflow preventor with adjustable outflow direction | Charles W. Dunmire, Richard D. Fields | 1995-01-31 |
| 5226441 | Backflow preventor with adjustable outflow direction | Charles W. Dunmire | 1993-07-13 |