Inventor

LIU QINGSHAN

DE4 patents

⚠️ This page may combine multiple inventors who share the name “LIU QINGSHAN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

LIU QINGSHAN

2 patents

USD640337SJun 21, 2011

Fitness device

LIU QINGSHAN13 citations79

US5354083AOct 11, 1994

Drive system for muscle-powered equipment and vehicles, in particular bicycles

LIU QINGSHAN16 citations69

(unassigned)

1 patent

US5601301AFeb 11, 1997

Drive system for muscle-powered equipment and vehicles, in particular bicycles

317 citations94

KONGQIAO WANG

1 patent

US9317124B2Apr 19, 2016

Command input by hand gestures captured from camera

KONGQIAO WANG24 citations90