Chunhong Yu

3 Patents

• US125984092026

  In-ear Wearable Device

  Listening Wisdom (Nanjing) Technology Co., Ltd.

  0 cites
• US123237562025

  In-ear Wearable Device

  Listening Wisdom (Nanjing) Technology Co., Ltd.

  0 cites
• US122736772025

  Wireless Listening Device

  Listening Wisdom (Nanjing) Technology Co., Ltd.

  0 cites