A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
A47C—CHAIRS; SOFAS; BEDS
A47C23/00—Spring mattresses with rigid frame or forming part of the bedstead, e.g. box springs; Divan bases; Slatted bed bases
A47C23/12—Spring mattresses with rigid frame or forming part of the bedstead, e.g. box springs; Divan bases; Slatted bed bases using tensioned springs, e.g. flat type
A47C23/28—Tensioning devices therefor
Landscapes
Seeds, Soups, And Other Foods
(AREA)
Non-Alcoholic Beverages
(AREA)
Food Preservation Except Freezing, Refrigeration, And Drying
(AREA)