Davis, Ralph A.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Davis, Ralph A..The latest application filed is for "nasal breathing apparatus".
- Davis, Ralph A. - Wichita KS
- Davis; Ralph A. - Midland MI
| Patent | Date |
|---|---|
| Nasal breathing apparatus App 20040237967 - Davis, Ralph A. | 2004-12-02 |
| Rotary Engine App 20030136104 - Davis, Ralph A. | 2003-07-24 |
| Electric bed heating device Grant 4,491,721 - Davis January 1, 1 | 1985-01-01 |
| Linear turbine Grant 4,134,469 - Davis January 16, 1 | 1979-01-16 |
| Recovery of hydrogen bromide from aromatic bromides Grant 3,919,398 - Davis November 11, 1 | 1975-11-11 |
| Recovery Of Bromine From Organic Bromides Grant 3,875,293 - Davis April 1, 1 | 1975-04-01 |
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