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Chih-Feng Chang

HE Hongfujin Precision Electronics(Tianjin)Co.: 1 patents #16 of 44Top 40%
📍 Wailiao, TW: #2 of 3 inventorsTop 70%
Overall (2020): #186,927 of 565,922Top 35%
2
Patents 2020

Issued Patents 2020

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
10794077 Mechanical parking garage Pu-Lin Chang 2020-10-06
10669759 Adjustable hinge assembly of mounting device Hsueh-Chin Lu, HUNG-LIANG CHUNG 2020-06-02