JK

Johnson Zone An KONG

📍 Tai Po, CN: #4 of 10 inventorsTop 40%
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1
Patents 2021

Issued Patents 2021

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
11177940 Method of evidencing existence of digital documents and a system therefor Michael Lin, Ronald Ker-Wei Yu, Ken Ming-Kin Yip 2021-11-16