Brestel; Ronald R.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Brestel; Ronald R..The latest application filed is for "control valve having live loaded packing follower with leak-off and independent secondary seal".
- Brestel; Ronald R. - Marshalltown IA
| Patent | Date |
|---|---|
| Control valve having live loaded packing follower with leak-off and independent secondary seal Grant 8,281,797 - Brestel October 9, 2 | 2012-10-09 |
| Control Valve Having Live Loaded Packing Follower with Leak-Off and Independent Secondary Seal App 20110147632 - Brestel; Ronald R. | 2011-06-23 |
| Fluid flow control valve with high temperature bi-directional shutoff Grant 7,484,710 - Koester , et al. February 3, 2 | 2009-02-03 |
| Fluid flow control valve with high temperature bi-directional shutoff App 20050211942 - Koester, David J. ; et al. | 2005-09-29 |
| Graphite packing Grant 5,299,812 - Brestel , et al. April 5, 1 | 1994-04-05 |
| Cam valve self-centering seat Grant 4,519,579 - Brestel , et al. May 28, 1 | 1985-05-28 |
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