Patents/Inventors

Shengmei Duan

BallerupDK3 patents

4 Patents

USD10518312024
Battery Charging Case for Mobile Devices
GN Audio A/S
0 cites
USD10447142024
Battery Charging Case for Mobile Devices
GN Audio A/S
0 cites
USD10160432024
Earphone
GN Audio A/S
0 cites
USD10153082024
Earphone
GN Audio A/S
0 cites