Patent classifications
A
HUMAN NECESSITIES
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A23
FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
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A23F
COFFEE; TEA; THEIR SUBSTITUTES; MANUFACTURE, PREPARATION, OR INFUSION THEREOF
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3/00
Tea; Tea substitutes; Preparations thereof
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A23F3/06
Treating tea before extraction; Preparations produced thereby
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A23F3/14
Tea preparations, e.g. using additives
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