GENEVA, Sept. 24 -- HUBEI POLYTECHNIC UNIVERSITY filed a patent application (CN2025/083646) for “COLOR MIXING APPARATUS FOR DRAWING”. With publication no. WO/2026/193804, here are the other details related to the patent application:
Kind: Initial Publication with ISR [A1]
IPC: B44D 3/02
Notably, the patent application was submitted under the International Patent Classification (IPC) system, which is managed by the World Intellectual Property Organization (WIPO).
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