Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUSD421379 S
Publication typeGrant
Application numberUS 29/087,737
Publication dateMar 7, 2000
Filing dateMay 8, 1998
Publication number087737, 29087737, US D421379 S, US D421379S, US-S-D421379, USD421379 S, USD421379S
InventorsRobert J. Sanford
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Wrench handle extension
US D421379 S
Previous page
Next page
  1. The ornamental design for wrench handle extension, as shown and described.

FIG. 1 is a perspective view of a wrench handle extension utilizing the novel design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof;

FIG. 8 is a perspective view showing the end piece in its optional reversed position; and,

FIG. 9 is an exploded view depicting the handle, locking pin and end piece.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US20130233134 *Feb 9, 2012Sep 12, 2013Jackie Dudley HumphreyApparatus for extending the effective length of tool shanks and method for manufacturing
U.S. ClassificationD08/107, D08/21