MA; Hongmei
Patent Applications and Registrations
Patent applications and USPTO patent grants for MA; Hongmei.The latest application filed is for "balanced armature type speaker".
- MA; Hongmei - Kunshan City CN
- Ma; Hongmei - Zhengzhou CN
| Patent | Date |
|---|---|
| Balanced Armature Type Speaker App 20210368278 - ZHANG; Zhiqiang ; et al. | 2021-11-25 |
| Electrical connector structure adapted for vehicle cigarette lighter device Grant 11,056,828 - Ma , et al. July 6, 2 | 2021-07-06 |
| Electrical Connector Structure Adapted For Vehicle Cigarette Lighter Device App 20200388956 - MA; Yaowu ; et al. | 2020-12-10 |
| Electrical connector structure adapted for a cigarette lighting device in vehicles Grant 10,797,436 - Ma , et al. October 6, 2 | 2020-10-06 |
| Secure Electrical Socket And Plug App 20180323537 - MA; Yaowu ; et al. | 2018-11-08 |
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