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US Trademark Classification

Photochromic glass, not for building 021-4941

光致变色玻璃(非建筑用)

Chinese 光致变色玻璃(非建筑用)
English Photochromic glass, not for building
Spanish vidrio fotocromático, no destinado a la construcción
Term ID
021-4941
Class
21
Type
Goods
Status
Active · added, not since modified (A)
Effective date
2023-01-01
Version
12-2023

Official English notes

Photochromic glass is glass that changes tint based upon its exposure to UV sunlight.