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Publication numberUSD341655 S
Publication typeGrant
Application numberUS 29/004,468
Publication dateNov 23, 1993
Filing dateFeb 5, 1993
Publication number004468, 29004468, US D341655 S, US D341655S, US-S-D341655, USD341655 S, USD341655S
InventorsJohn P. Inda, Joseph J. Inda
Original AssigneeGeneral Plastics, Inc.
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Air duct riser
US D341655 S
Abstract  available in
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  1. The ornamental design for an air duct riser, as shown and described.

FIG. 1 is a top plan view of an air duct riser which incorporates our new design;

FIG. 2 is a side elevation view of the air duct riser;

FIG. 3 is a front elevation view of the air duct riser; and,

FIG. 4 is a perspective view of the air duct riser.

The rear of the air duct riser is a mirror image of the front, and the bottom is a mirror image of the top.

Non-Patent Citations
1Exhibit A--Photograph of prior air duct riser.
2Exhibit B--Photograph of prior air duct riser.
3Sales information from Northern Pipe Products and GPK Products, Inc. (Undated but believed to be prior art to the present application).
U.S. ClassificationD23/393