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Publication numberUSD529606 S1
Publication typeGrant
Application numberUS 29/202,969
Publication dateOct 3, 2006
Filing dateApr 7, 2004
Priority dateApr 7, 2004
Also published asCA108325S
Publication number202969, 29202969, US D529606 S1, US D529606S1, US-S1-D529606, USD529606 S1, USD529606S1
InventorsPaul Hind, Desmond T. Curran, Peter D. Lee
Original Assignee3M Innovative Properties Company
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Air duct
US D529606 S1
Abstract  available in
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  1. The ornamental design for an air duct, as shown and described.

FIG. 1 is a perspective view, showing the new design for an air duct;

FIG. 2 is a left side view thereof, the right side view being a mirror image thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof.

The broken line showing forms no part of the claimed design, and the shading is provided to illustrate contour only and is not an indication of texture, etc.

Non-Patent Citations
1Photo of Airduct for 3M Powered Air Purifying Respirator.
2Photo of Airduct for Arbin Powered Air Purifying Respirator (end view).
3Photo of Airduct for Arbin Powered Air Purifying Respirator (side view).
4Photo of Airduct for Martindale Powered Air Purifying Respirator.
5Photo of Airduct for Speedglas Powered Air Purifying Respirator.
U.S. ClassificationD24/110.3