Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B43
WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
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B43L
ARTICLES FOR WRITING OR DRAWING UPON;; WRITING OR DRAWING AIDS;; ACCESSORIES FOR WRITING OR DRAWING
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3/00
Writing or drawing underlays, e.g. blotting pads
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B43L3/008
with supporting means
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