WN

Wing Yiu Ng

WC World Wide Stationery Mfg. Co.: 2 patents #1 of 2Top 50%
Overall (2020): #107,976 of 565,922Top 20%
2
Patents 2020

Issued Patents 2020

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
10532598 Ring binder mechanism Hung Yu Cheng 2020-01-14
10532599 Ring binder mechanism Hung Yu Cheng 2020-01-14