DeWall; Richard A.
Patent Applications and Registrations
Patent applications and USPTO patent grants for DeWall; Richard A..The latest application filed is for "metabolic bubble oxygenator".
- DeWall; Richard A. - Dayton OH
| Patent | Date |
|---|---|
| Metabolic bubble oxygenator Grant 3,994,689 - DeWall November 30, 1 | 1976-11-30 |
| Medical drainage device Grant 3,946,735 - DeWall March 30, 1 | 1976-03-30 |
| Perfusion Safety Valve Grant 3,759,289 - DeWall September 18, 1 | 1973-09-18 |
| Perfusion Safety Valve Grant 3,717,174 - Dewall February 20, 1 | 1973-02-20 |
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