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Patent applications and USPTO patent grants for Keith; John L..The latest application filed is for "automatic impedance matching system, method and apparatus".
Patent | Date |
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Automatic Impedance Matching System, Method And Apparatus App 20200343873 - Hrivnak; Paul ;   et al. | 2020-10-29 |
Automatic impedance matching system, method and apparatus Grant 10,804,873 - Hrivnak , et al. October 13, 2 | 2020-10-13 |
Single solution impedance matching method Grant 10,680,582 - Hrivnak , et al. | 2020-06-09 |
Automatic impedance matching system, method and apparatus Grant 10,680,574 - Hrivnak , et al. | 2020-06-09 |
Single solution impedance matching system, method and apparatus Grant 10,483,946 - Hrivnak , et al. Nov | 2019-11-19 |
Temperature measuring apparatus Grant 4,047,435 - Keith September 13, 1 | 1977-09-13 |
Temperature compensated constant voltage apparatus Grant 4,030,023 - Keith June 14, 1 | 1977-06-14 |
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