Bray; Donald Thedore
Patent Applications and Registrations
Patent applications and USPTO patent grants for Bray; Donald Thedore.The latest application filed is for "reverse osmosis system with automatic pressure relief valve".
- Bray; Donald Thedore - Escondido CA
| Patent | Date |
|---|---|
| Reverse osmosis system with automatic pressure relief valve Grant 4,077,883 - Bray March 7, 1 | 1978-03-07 |
| Manually operable reverse osmosis apparatus Grant 4,070,280 - Bray January 24, 1 | 1978-01-24 |
| Simultaneous production of multiple grades of purified water by reverse osmosis Grant 4,046,685 - Bray September 6, 1 | 1977-09-06 |
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