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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A47C17/04
Seating furniture, e.g.; sofas, couches, settees, or the like, with movable parts; changeable to beds; Chair beds
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A47C17/16
Seating furniture; changeable to beds by tilting or pivoting the back-rest
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A47C17/161
with back-rest made of multiple movable cushions
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