Inventor

YUN ANN YUHUI

US3 patents

Patents

3 patents

US9612671B1Apr 4, 2017

Stylus tip

AMAZON TECH INC40 citations92

US9244543B1Jan 26, 2016

Method and device for replacing stylus tip

AMAZON TECH INC33 citations92

US9740313B1Aug 22, 2017

Method and device for replacing stylus tip

AMAZON TECH INC0 citations50