A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
A47C—CHAIRS; SOFAS; BEDS
A47C21/00—Attachments for beds, e.g. sheet holders or bed-cover holders; Ventilating, cooling or heating means in connection with bedsteads or mattresses
A47C21/04—Devices for ventilating, cooling or heating
A47C21/048—Devices for ventilating, cooling or heating for heating
Landscapes
Mattresses And Other Support Structures For Chairs And Beds
(AREA)