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United States Patent	D591,023
Zimmerman	April 21, 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/272,864
Filed:	February 20, 2007

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Related U.S. Patent Documents

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	Application Number	Filing Date	Patent Number	Issue Date
	11059267	Feb., 2005	7296807
	10348679	Jan., 2003	6886838

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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

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1622354	March 1927	Smith
1636682	July 1927	Carlson
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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
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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 a right side perspective view thereof;

FIG. 3 is a side elevational view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a rear elevational view thereof; and,

FIG. 7 is a bottom plan 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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