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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20/00
Head-, foot- or like rests for beds, sofas or the like
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A47C20/027
Back supports, e.g. for sitting in bed
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