Patents/Inventors

Yuanhong Wang

HangzhouCN3 patents

4 Patents

US122270232025
Knock Type Direct Liquid Pen Refill Assembly and Writing Pen
QINGDAO BEST POINT STATIONERY CO., Ltd.
0 cites
US120303362024
Pressing Type Writing Instrument
QINGDAO BEST POINT STATIONERY CO., Ltd.
0 cites
US116609032023
Writing Instrument
QINGDAO BEST POINT STATIONERY CO., Ltd.
0 cites
US115841522023
Writing Tool with Anti-drying Device
QINGDAO BEST POINT STATIONERY CO., Ltd.
0 cites