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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A47C17/13
Seating furniture having non-movable backrest; changeable; to beds; by increasing the available; seat; part, e.g. by drawing; seat cushion; forward
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A47C17/132
with multiple seat cushions
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A47C17/134
by lifting or tilting
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