De Vault; Robert T.
Patent Applications and Registrations
Patent applications and USPTO patent grants for De Vault; Robert T..The latest application filed is for "variable inlet hydrojet boat drive".
- De Vault; Robert T. - Simi Valley CA
- De Vault; Robert T. - Malibu CA
| Patent | Date |
|---|---|
| Variable inlet hydrojet boat drive Grant 4,449,944 - Baker , et al. May 22, 1 | 1984-05-22 |
| Hydrojet Propulsion Drive Grant 3,827,390 - De Vault , et al. August 6, 1 | 1974-08-06 |
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