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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A23B5/04
Freezing; Subsequent thawing; Cooling
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A23B5/05
Freezing or cooling; with addition of chemicals
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