duckworth david g
Patent Applications and Registrations
Patent applications and USPTO patent grants for duckworth david g.The latest application filed is for "centralizers for centralizing well casings".
- - Newport Coast CA unknown
- - unknown
- Duckworth; David G. - Irvine CA
- Duckworth; David G. - Newport Beach CA
- Duckworth; David G. - Laguna Beach CA
| Patent | Date |
|---|---|
| Illuminated keyboard Grant 10942581 - | 2021-03-09 |
| Apparatus to brine turkey Grant 10653159 - | 2020-05-19 |
| Asymmetric terebrating shovel with lateral displacement slide surface and pivoting level leg Grant 10542652 - | 2020-01-28 |
| Centralizers for centralizing well casings Grant 9,725,967 - Jewett , et al. August 8, 2 | 2017-08-08 |
| Centralizers for centralizing well casings Grant 9,626,091 - Jewett , et al. April 18, 2 | 2017-04-18 |
| Centralizers For Centralizing Well Casings App 20160084021 - Jewett; Scott E. ; et al. | 2016-03-24 |
| Centralizers For Centralizing Well Casings App 20150027684 - JEWETT; SCOTT E. ; et al. | 2015-01-29 |
| Illuminated keyboard Grant 8,890,720 - Shipman , et al. November 18, 2 | 2014-11-18 |
| Cavity filled lightpipe for illuminating keys of a keyboard Grant 8,690,368 - Shipman , et al. April 8, 2 | 2014-04-08 |
| Door hanger clip Grant D661,912 - Hulina , et al. June 19, 2 | 2012-06-19 |
| Illuminated keyboard App 20120139843 - Shipman; Michael ; et al. | 2012-06-07 |
| Illuminated keyboard App 20090201179 - Shipman; Michael ; et al. | 2009-08-13 |
| Internet Communications Systems And Methods Using Different Wireless Links For Inbound And Outbound Data App 20070129019 - Otten; David D. ; et al. | 2007-06-07 |
| Data communications systems and methods using different wireless links for inbound and outbound data Grant 7,174,127 - Otten , et al. February 6, 2 | 2007-02-06 |
| Illuminated keyboard Grant 7,172,303 - Shipman , et al. February 6, 2 | 2007-02-06 |
| Illuminated keyboard App 20050083672 - Shipman, Michael ; et al. | 2005-04-21 |
| Backpack including integral vibration damper Grant 6,619,523 - Duckworth September 16, 2 | 2003-09-16 |
| Hybrid satellite communications system App 20030022625 - Otten, David D. ; et al. | 2003-01-30 |
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