Pfantz; Douglas C.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Pfantz; Douglas C..The latest application filed is for "no-bleed pilot for pressure regulating valve".
- Pfantz; Douglas C. - Melbourne IA
| Patent | Date |
|---|---|
| No-bleed pilot for pressure regulating valve Grant 6,371,156 - Walton , et al. April 16, 2 | 2002-04-16 |
| Elastomeric element valve Grant 6,102,071 - Walton , et al. August 15, 2 | 2000-08-15 |
| Elastomeric element valve Grant 5,964,446 - Walton , et al. October 12, 1 | 1999-10-12 |
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