Application number? :CN20 1 120279627.7
Date of application: 20 1 1.08.03.
Public (Announcement)No.: CN2022 13379U
Date of publication (announcement): 20 12.05.09
Name of invention: calligraphy water-writing cloth
IPC classification number: B43L 1/00
Applicant (patent right): Chen Weiyang;
Inventor: Chen Weiyang.