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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4/00
Foldable, collapsible or dismountable chairs
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A47C4/04
Folding chairs with inflexible seats
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A47C4/06
Attachment of upholstery or fabric to frames
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