Caulfield; John Keith
Patent Applications and Registrations
Patent applications and USPTO patent grants for Caulfield; John Keith.The latest application filed is for "method and apparatus for pulling a crown plug".
- Caulfield; John Keith - Houston TX
| Patent | Date |
|---|---|
| Method for pulling a crown plug Grant 10,626,693 - Caulfield , et al. | 2020-04-21 |
| Method And Apparatus For Pulling A Crown Plug App 20190120007 - Caulfield; John Keith ; et al. | 2019-04-25 |
| Method and apparatus for pulling a crown plug Grant 10,036,225 - Caulfield , et al. July 31, 2 | 2018-07-31 |
| Method And Apparatus For Pulling A Crown Plug App 20170022774 - Caulfield; John Keith ; et al. | 2017-01-26 |
| Method for pulling a crown plug from a subsea tree Grant 9,291,016 - Caulfield , et al. March 22, 2 | 2016-03-22 |
| Method And Apparatus For Pulling A Crown Plug App 20150107846 - Caulfield; John Keith ; et al. | 2015-04-23 |
| Method for pulling a crown plug Grant 8,869,899 - Caulfield , et al. October 28, 2 | 2014-10-28 |
| Method And Apparatus For Pulling A Crown Plus App 20120227974 - Caulfield; John Keith ; et al. | 2012-09-13 |
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