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Publication numberUSD471972 S1
Publication typeGrant
Application numberUS 29/151,503
Publication dateMar 18, 2003
Filing dateNov 7, 2001
Priority dateNov 7, 2001
Publication number151503, 29151503, US D471972 S1, US D471972S1, US-S1-D471972, USD471972 S1, USD471972S1
InventorsMurray A. Hebert
Original AssigneeMurray A. Hebert
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Extension for a heating duct
US D471972 S1
Abstract  available in
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  1. The ornamental design for an extension for a heating duct, as shown and described.

FIG. 1 is a perspective view showing my new design for an extension for a heating duct;

FIG. 2 is a left side elevation view which is a mirror image of the right side elevation view;

FIG. 3 is a bottom plan view;

FIG. 4 is a front elevation view which is a mirror image of the rear elevation view; and,

FIG. 5 is a top plan view.

U.S. ClassificationD23/393