Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6293298 | Water softener valve | Boyd Cornell | 2001-09-25 |
| 6290845 | Water softener tank | Boyd Cornell | 2001-09-18 |
| 5622618 | Apparatus for monitoring cumulative flow of fluid through a filter medium | Douglas K. Brane | 1997-04-22 |
| 5378370 | Water treatment tank | Boyd Cornell | 1995-01-03 |
| 5300230 | Comprehensive water treatment system | David L. Tucker | 1994-04-05 |
| 5157979 | Comprehensive water treatment system | David L. Tucker | 1992-10-27 |
| 5116491 | Comprehensive water treatment system | David L. Tucker | 1992-05-26 |
| 5089140 | Comprehensive water treatment system | David L. Tucker | 1992-02-18 |
| 5065901 | Apparatus for monitoring a flow of fluid through a filter medium | Douglas K. Brane | 1991-11-19 |
| 5050772 | Apparatus for monitoring a flow of fluid through a filter medium | Douglas K. Brane | 1991-09-24 |
| 4466457 | Bypass and hard water mix valve | Douglas K. Brane, Hilton H. Hammond | 1984-08-21 |
| 4379053 | Filter bypass valve assembly | — | 1983-04-05 |
| 4359384 | Self-locking filter valve | Douglas K. Brane, Hilton H. Hammond | 1982-11-16 |