Stackable extension

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Description

FIG. 1 is a right rear perspective view of a stackable extension showing my design.

FIG. 2 is a left front perspective view thereof.

FIG. 3 is a front view thereof.

FIG. 4 is a rear view thereof.

FIG. 5 is a right side view thereof, the left side view being a mirror image thereof.

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

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

Claims

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

Referenced Cited
U.S. Patent Documents
4978023 December 18, 1990 Behlmann et al.
D340123 October 12, 1993 Howey, Jr.
5259523 November 9, 1993 Scherb
5706965 January 13, 1998 Honma et al.
D410984 June 15, 1999 Lee
D529566 October 3, 2006 Stryjak et al.
D582280 December 9, 2008 Liden et al.
D583200 December 23, 2008 Moran
Patent History
Patent number: D638587
Type: Grant
Filed: Oct 28, 2010
Date of Patent: May 24, 2011
Inventor: Richard C. Petek (Medina, OH)
Primary Examiner: Susan Bennett Hattan
Assistant Examiner: Barbara B Lohr
Attorney: Renner, Otto, Boisselle & Sklar, LLP
Application Number: 29/377,982
Classifications
Current U.S. Class: Rescue (D29/124)