Inventor
MA QIANJIA
US6 patents
Patents
6 patentsUS10529161B2Jan 7, 2020
Keys and locks
MA YAOWU5 citations79
US11055938B2Jul 6, 2021
Key and lock set
MA YAOWU1 citations68
US11790711B2Oct 17, 2023
Keys and locks
MA YAOWU0 citations58
US12071078B2Aug 27, 2024
Car mobile phone connection device
MA YAOWU2 citations56
US11056828B2Jul 6, 2021
Electrical connector structure adapted for vehicle cigarette lighter device
MA YAOWU1 citations56
US10797436B2Oct 6, 2020
Electrical connector structure adapted for a cigarette lighting device in vehicles
MA YAOWU1 citations56