Stepped mandrel

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Description

FIG. 1 is an isometric view;

FIG. 2 is a side view;

FIG. 3 is a perspective view;

FIG. 4 is a front view; and,

FIG. 5 is a back view.

The broken lines in the drawings depict unclaimed environmental subject matter.

Claims

The ornamental design for a stepped mandrel, as shown and described.

Referenced Cited
U.S. Patent Documents
3783928 January 1974 Lee
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D457899 May 28, 2002 Nam et al.
D475589 June 10, 2003 Wilkinson
6840522 January 11, 2005 Merrifield
D571835 June 24, 2008 Concari et al.
D584933 January 20, 2009 Jergenson et al.
D588887 March 24, 2009 Lehman
D612875 March 30, 2010 Beynon
D616275 May 25, 2010 Kang
D622117 August 24, 2010 Gerace et al.
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Patent History
Patent number: D640298
Type: Grant
Filed: Jan 11, 2011
Date of Patent: Jun 21, 2011
Inventor: William E. Launius, Jr. (Millstadt, IL)
Primary Examiner: Patricia Palasik
Attorney: Charles McCloskey
Application Number: 29/383,036