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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A47C3/20
Chairs or stools with vertically-adjustable seats
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A47C3/36
with means, or adapted, for inclining the legs of the chair or stool for varying height of seat
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