Wall block

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Description

FIG. 1 is a perspective view of a wall block showing my new design;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a side view thereof, the opposite being a mirror image thereof;

FIG. 5 is a front view thereof; and

FIG. 6 is a rear view thereof.

Referenced Cited
U.S. Patent Documents
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Foreign Patent Documents
392474 November 1908 FRX
1385207 February 1975 GBX
Other references
  • The Besser Company Bulletin, Feb. 1985. The Hollow Building Tile Assoc. Handbook, p. 11, Jan. 1924.
Patent History
Patent number: D295788
Type: Grant
Filed: Feb 11, 1987
Date of Patent: May 17, 1988
Assignee: Keystone Retaining Wall Systems, Inc. (Edina, MN)
Inventor: Paul J. Forsberg (Richfield, MN)
Primary Examiner: A. Hugo Word
Law Firm: Burd, Bartz & Gutenkauf
Application Number: 7/13,383