Patent classifications
A
HUMAN NECESSITIES
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A23
FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
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A23B
PRESERVATION OF FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES; CHEMICAL RIPENING OF FRUIT OR VEGETABLES
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5/00
Preservation of eggs or egg products
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A23B5/08
Preserving with chemicals
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A23B5/12
in the form of liquids or solids
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A23B5/18
Inorganic compounds
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