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United States Patent	D588,323
Zimmerman	March 10, 2009

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CLAIM The ornamental design for a wheelbarrow extension, as shown and described.

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Inventors:	Zimmerman; Felton (Tampa, FL)
Assignee:	Zimmco, Inc. (Tampa, FL)
Appl. No.:	D/272,865
Filed:	February 20, 2007

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Current U.S. Class:	D34/27
Current International Class:	1202
Field of Search:	D34/12-27 D8/373 280/47.131,47.17,47.18,47.19,47.26,47.33,40,655,656,767,47,31,30,23 298/3

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References Cited

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U.S. Patent Documents

1264048	April 1918	Forster
1410174	March 1922	Eberle
1578213	March 1926	Smith
1612400	December 1926	Thomson
1622354	March 1927	Smith
1636682	July 1927	Carlson
2061327	November 1936	Mosel
2544505	March 1951	Kronhaus
2949209	August 1960	Schott
3552762	January 1971	Garber
D404883	January 1999	Shuchart et al.
D408607	April 1999	Shuchart et al.
D408955	April 1999	Shuchart et al.
5924708	July 1999	Bisaillon et al.
D456971	May 2002	Abel
6715775	April 2004	Abel
6880852	April 2005	Lim
D530879	October 2006	Iturbide Jimenez et al.
7331587	February 2008	Hyp et al.
2002/0130491	September 2002	Abel

Primary Examiner: Ramirez; Cynthia E
Attorney, Agent or Firm: Weiss; Philip M. Weiss & Weiss

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Description

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FIG. 1 is a side elevational view of a wheelbarrow extension showing our new design;

FIG. 2 is another side elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a rear view thereof; and,

FIG. 6 is a front view thereof.

The broken line showing in FIG. 1 is included for the purpose of illustrating environment and forms no part of the claimed design.

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