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Publication numberUSD521489 S1
Publication typeGrant
Application numberUS 29/214,134
Publication dateMay 23, 2006
Filing dateSep 28, 2004
Priority dateSep 28, 2004
Publication number214134, 29214134, US D521489 S1, US D521489S1, US-S1-D521489, USD521489 S1, USD521489S1
InventorsDaniel A. Farnsworth, Barry E. Royse
Original AssigneeAudio Authority Corporation
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Intercom base unit
US D521489 S1
Abstract  available in
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  1. The ornamental design for an intercom base unit, as shown and described.

FIG. 1 is a perspective view of the intercom base unit of the present invention;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof; and,

FIG. 6 is a top plan view thereof.

The broken lines in the Figures are for illustrative purposes only and form no part of the claimed design.

Non-Patent Citations
1Photograph of Old Intercom Unit used by Greyfield Industries, undated.
U.S. ClassificationD14/159