GM

GuangHua Ma

OE Otis Elevator: 1 patents #966 of 1,840Top 55%
DA Danaher: 1 patents #1,463 of 2,950Top 50%
Overall (All Time): #1,913,047 of 4,157,543Top 50%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
10712154 Laser level Kai Fei, Thomas Bösch 2020-07-14
8973731 Regenerative power control for passenger conveyors — 2015-03-10