Safety tongs for elevator
ZHANG CHAOKANG, MENG YA, LU QIANG, LIU YANG, REN YUZHU, MENG XIANGSHI
Year of Publication 25.12.2020
Get full text
Year of Publication 25.12.2020
Patent
Adjustable mounting seat of elevator speed limiter
ZHANG CHAOKANG, ZHANG LEI, LU QIANG, REN YUZHU, LI QIANG, MENG XIANGSHI
Year of Publication 04.12.2020
Get full text
Year of Publication 04.12.2020
Patent