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I claim the ornamental design for a retaining wall block, as shown and described.
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FIG. 1 is perspective view of a retaining wall block embodying my new design, as viewed toward the front, top and one side of the block;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a side elevational view thereof, the opposite side being a mirror image thereof;
FIG. 4 is a top plan view thereof;
FIG. 5 is a bottom plan view thereof; and,
FIG. 6 is rear elevational view thereof.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Aug 31 2000 | HAMMER, THOMAS S | WESTBLOCK SYSTEMS, INC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 012889 | /0564 | |
| May 08 2002 | Westblock Systems, Inc. | (assignment on the face of the patent) | / |
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