CC

Cheng-Kun Chen

Overall (All Time): #1,219,129 of 4,157,543Top 30%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
8714055 One-way ratchet wheel element 2014-05-06
7665649 Device for assembling groups of eyebrow beautifying needles and method therefor 2010-02-23
7380480 Safety needle device for tattooing body and eyebrows 2008-06-03
7335211 Transmission system of eyebrow-beautifying device 2008-02-26