Retaining wall building block

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Description

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

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a front view of a retaining wall building block of a second embodiment.

Referenced Cited
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Foreign Patent Documents
2651258 March 1991 FRX
Other references
  • Seagren Industries, Inc., St. Louis, Mo., Loffelstein Retaining Walls, pp. 1-4 and insert, Circa. 1990. Kiltie Corporation, North St. Paul., Minn., Versa-Lok Retaining Wall Systems, Foldable insert, 1989. Keystone Retaining Wall Systems, Inc., Minneapolis, Minn., Compac Unit, pp. 1 and 2, 1990. Keystone Retaining Wall Systems, Inc., Minneapolis, Minn., Keystone Retaining Wall Systems, Foldable insert, 1991. Allan Block Corporation, Bloomington, Minn., Allan Block Retaining Walls, pp. 1-4 and two inserts, 1990. Stone Wall, Landscape Retaining Wall System, pp. 1-4 and one insert, Circa. 1990.
Patent History
Patent number: D347285
Type: Grant
Filed: Jun 18, 1992
Date of Patent: May 24, 1994
Assignee: St. Louis Retaining Wall Co., Inc. (St. Louis, MO)
Inventor: Mark A. Woolbright (St. Louis, MO)
Primary Examiner: A. Hugo Word
Assistant Examiner: Doris Clark
Law Firm: Senniger, Powers, Leavitt & Roedel
Application Number: 7/900,853
Classifications
Current U.S. Class: Construction Block Or Brick Type (17) (D25/113)