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 numberUSD340996 S
Publication typeGrant
Application numberUS 07/954,487
Publication dateNov 2, 1993
Filing dateSep 30, 1992
Publication number07954487, 954487, US D340996 S, US D340996S, US-S-D340996, USD340996 S, USD340996S
InventorsMark A. Woolbright
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Retaining wall building block
US D340996 S
Abstract  available in
Previous page
Next page
  1. The ornamental design for retaining wall building block, as shown and described.

FIG. 1 is a top plan view of a retaining wall building block showing my new design;

FIG. 2 is a bottom plan thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a rear view thereof; and,

FIG. 6 is a left side elevational view thereof.

Non-Patent Citations
1Allan Block Corporation, Bloomington, Minn., Allan Block Retaining Walls, pp. 1-4 and two inserts, 1990.
2Keystone Retaining Wall Systems, Inc., Minneapolis, Minn., Compac Unit, pp. 1 and 2, 1990.
3Keystone Retaining Wall Systems, Inc., Minneapolis, Minn., Keystone Retaining Wall Systems, Foldable insert, 1991.
4Kiltie Corporation, North St. Paul Minn., Versa-Lok Retaining Wall Systems, Foldable insert, 1989.
5Seagren Industries, Inc., St. Louis, Mo., Loffelstein Retaining Walls, pp. 1-4 and insert , Circa. 1990.
6Stone Wall, Lanscape Retaining Wall System, pp. 1-4 and one insert, Circa. 1990.
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US8272812Aug 17, 2009Sep 25, 2012Smart Slope LlcRetaining wall system
US8745953Sep 21, 2012Jun 10, 2014Smart Slope, LlcRetaining wall system
US9695596Apr 18, 2012Jul 4, 2017Pacific Prebenched Ltd.Natural rock panel, natural rock veneer panel and panel support apparatus
US20100251649 *Aug 17, 2009Oct 7, 2010Smart Slope, LlcRetaining Wall System
U.S. ClassificationD25/113