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Patent applications and USPTO patent grants for Hill; David H..The latest application filed is for "vortex flow catalytic conversion apparatus and method of vortex flow catalytic conversion".
Patent | Date |
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Vortex Flow Catalytic Conversion Apparatus And Method Of Vortex Flow Catalytic Conversion App 20190257330 - Hill; David H. ;   et al. | 2019-08-22 |
Vortex Flow Apparatus App 20180066563 - HILL; David H. ;   et al. | 2018-03-08 |
Vortex flow apparatus Grant 9,803,667 - Brock , et al. October 31, 2 | 2017-10-31 |
Vortex Flow Apparatus App 20150330422 - BROCK; John L. ;   et al. | 2015-11-19 |
Managed website system and method Grant 8,468,577 - Pooley , et al. June 18, 2 | 2013-06-18 |
XML-enabled control and monitoring method and apparatus App 20020169825 - Hougland, Benson ;   et al. | 2002-11-14 |
Anchor bolt assembly and utilization Grant 3,877,235 - Hill April 15, 1 | 1975-04-15 |
Trailer Hitch For Coupling With Pick-up Truck Grant 3,837,675 - Barnes , et al. September 24, 1 | 1974-09-24 |
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