Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4856758 | Silicon carbide valve elements | — | 1989-08-15 |
| 4854347 | Faucet valve with noise reducing slots and blades in preclosing apertures | — | 1989-08-08 |
| 4838304 | Compact cartridge for a single handle faucet valve | — | 1989-06-13 |
| 4805661 | Faucet valve with anti-siphon back flow preventer | Robert Roland, Joe D. Hutto | 1989-02-21 |
| 4804011 | Cartridge with separate bottom for a mixing valve | — | 1989-02-14 |