Patent classifications
A
HUMAN NECESSITIES
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A61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
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A61K
PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
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8/00
Cosmetics or similar toiletry preparations
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A61K8/02
characterised by special physical form
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A61K8/0241
Containing particulates characterized by their shape and/or structure
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A61K8/0279
Porous; Hollow
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