SHANGHAI ONE TOP CORPORATION
Patent Applications and Registrations
Patent applications and USPTO patent grants for SHANGHAI ONE TOP CORPORATION.The latest application filed is for "cathode lock and method allowing the cathode lock to switch between normally-opened state and normally-closed state".
- SHANGHAI ONE TOP CORPORATION - Shanghai CN
- Shanghai One Top Corporation - Shaghhai CN
- SHANGHAI ONE TOP CORPORATION - Fengxian CN
| Patent | Date |
|---|---|
| Cathode lock and method allowing the cathode lock to switch between normally-opened state and normally-closed state Grant 10,519,695 - Chang Dec | 2019-12-31 |
| Energy-saving magnetic lock Grant 10,422,168 - Chang Sept | 2019-09-24 |
| Cathode Lock and Method Allowing the Cathode Lock to Switch Between Normally-Opened State and Normally-Closed State App 20170306653 - Chang; Tsung-Chih | 2017-10-26 |
| Energy-Saving Magnetic Lock App 20150308170 - Chang; Tsung-Chin | 2015-10-29 |
| Device for controlling a door Grant 8,292,337 - Chang October 23, 2 | 2012-10-23 |
| Door Strike App 20100117383 - Mackle; Trevor ; et al. | 2010-05-13 |
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