Wall block
FIG. 1 is a perspective view of a wall block showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a side elevational view thereof, the opposite side being a mirror image thereof;
FIG. 6 is a rear elevational view thereof;
FIG. 7 is a perspective view of a second embodiment of a wall block showing my new design;
FIG. 8 is a front elevational view of FIG. 7;
FIG. 9 is a top plan view of FIG. 7;
FIG. 10 is a bottom plan view of FIG. 7;
FIG. 11 is a side elevational view of FIG. 7, the opposite side being a mirror image thereof;
FIG. 12 is a rear elevational of FIG. 7;
FIG. 13 is a perspective view of a third embodiment of a wall block showing my new design;
FIG. 14 is a front elevational view of FIG. 13;
FIG. 15 is a top plan view of FIG. 13;
FIG. 16 is a bottom plan view of FIG. 13;
FIG. 17 is a side elevational view of FIG. 13, the opposite side being a mirror image thereof; and
FIG. 18 is a rear elevational view of FIG. 13.
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Type: Grant
Filed: Nov 21, 1988
Date of Patent: May 21, 1991
Assignee: Keystone Retaining Wall Systems, Inc. (Edina, MN)
Inventor: Paul J. Forsberg (Edina, MN)
Primary Examiner: A. Hugo Word
Assistant Examiner: Doris Clark
Law Firm: Burd, Bartz & Gutenkauf
Application Number: 7/273,873