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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31/00
Medicinal preparations containing organic active ingredients
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A61K31/122
having the oxygen directly attached to a ring, e.g. quinones, vitamin K1, anthralin
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A61K31/125
Camphor; Nuclear substituted derivatives thereof
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