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Patent applications and USPTO patent grants for Harris; William Charles.The latest application filed is for "plunger lift".
Patent | Date |
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Plunger Lift App 20220025746 - Harris; William Charles ;   et al. | 2022-01-27 |
Plunger lift method Grant 11,180,977 - Harris , et al. November 23, 2 | 2021-11-23 |
Plunger Lift Method App 20200318466 - Harris; William Charles ;   et al. | 2020-10-08 |
Plunger lift method and apparatus Grant 10,641,072 - Harris , et al. | 2020-05-05 |
Plunger Lift Method And Apparatus App 20190120028 - Harris; William Charles ;   et al. | 2019-04-25 |
Plunger lift with internal movable element Grant 10,161,231 - Harris , et al. Dec | 2018-12-25 |
Plunger Lift With Internal Movable Element App 20170067327 - Harris; William Charles ;   et al. | 2017-03-09 |
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