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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5/00
Coffee; Coffee substitutes; Preparations thereof
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A23F5/20
Reducing or removing alkaloid content; Preparations produced thereby; Extracts or infusions thereof
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