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May 30, 2023

All-Season Quilt Is Air-Conditioned, 1939

Lightweight quilts that will keep sleepers cool in summer as well as warm in winter, developed originally for use in hospitals, have been placed on the market for the general public in 1939. By means of an electric fan, air that is artificially heated or chilled is blown through a flexible hose into the lining of the coverlet. Here the air is distributed evenly over the entire area of the quilt through branching air ducts, finally filtering through the porous inner lining.

Either warn or cool air can be fed into tubes inside this blanket.

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