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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3/00
Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
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A47C3/025
with seat, or seat and back-rest unit elastically; or pivotally; mounted in a rigid; base; frame
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A47C3/027
with curved rocking members between seat and; base; frame
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