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CPC
B43L27/04
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Parent Industries
B
PERFORMING OPERATIONS TRANSPORTING
B43
Writing accessories
B43L
ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
B43L27/00
Ink stands
Current Industry
B43L27/04
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Patents Grants
last 30 patents
Information
Patent Grant
Ink-slab for calligraphy
Patent number
6,155,425
Issue date
Dec 5, 2000
Jiun Feng You
B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information
Patent Grant
2773480
Patent number
2,773,480
Issue date
Dec 11, 1956
B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information
Patent Grant
1615377
Patent number
1,615,377
Issue date
Jan 25, 1927
B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information
Patent Grant
1557021
Patent number
1,557,021
Issue date
Oct 13, 1925
B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Patents Applications
last 30 patents