River Rock Inc.
Patent Applications and Registrations
Patent applications and USPTO patent grants for River Rock Inc..The latest application filed is for "air admittance valve preventing mephitis overflow".
- River Rock Inc. - Santa Fe Springs CA US
| Patent | Date |
|---|---|
| Flush and winterizing system Grant 11,066,291 - Chiang July 20, 2 | 2021-07-20 |
| Air admittance valve preventing mephitis overflow Grant 11,047,494 - Chen , et al. June 29, 2 | 2021-06-29 |
| Winterizing bypass valve system Grant 10,648,752 - Chiang | 2020-05-12 |
| Air Admittance Valve Preventing Mephitis Overflow App 20200011439 - Chen; Chao Chi ; et al. | 2020-01-09 |
| Air admittance valve preventing mephitis overflow Grant 10,415,712 - Chen , et al. Sept | 2019-09-17 |
| Air Admittance Valve Preventing Mephitis Overflow App 20180038496 - Chen; Chao Chi ; et al. | 2018-02-08 |
| Air admittance valve preventing mephitis overflow Grant 9,863,546 - Chen , et al. January 9, 2 | 2018-01-09 |
| Air Admittance Valve Preventing Mephitis Overflow App 20160201814 - Chen; Chao Chi ; et al. | 2016-07-14 |
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