Patent classifications
A
HUMAN NECESSITIES
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A47
FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
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A47C
CHAIRS; SOFAS; BEDS
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27/00
Spring, stuffed or fluid mattresses; or cushions; specially adapted for chairs, beds or sofas
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A47C27/05
with; padding material, e.g.; foamed material, in top, bottom, or side layers
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A47C27/056
with different layers of foamed material
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