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Patent applications and USPTO patent grants for Erhardt; James.The latest application filed is for "tankless water heater isolation valve assembly".
Patent | Date |
---|---|
Tankless Water Heater Isolation Valve Assembly App 20210381698 - Erhardt; James ;   et al. | 2021-12-09 |
Hydronic system air eliminator Grant 8,419,842 - Castrigno , et al. April 16, 2 | 2013-04-16 |
Valve assembly Grant 8,375,991 - Erhardt February 19, 2 | 2013-02-19 |
Hydronic System Air Eliminator App 20110107915 - Castrigno; Steven ;   et al. | 2011-05-12 |
Valve Assembly App 20100193043 - Erhardt; James | 2010-08-05 |
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