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The ornamental design for a wall block, as shown and described. |
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FIG. 1 is a front perspective view of a first embodiment of a wall block showing my new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a bottom plan view thereof;
FIG. 4 is a front elevational view thereof;
FIG. 5 is a rear elevational view thereof;
FIG. 6 is a side elevational view thereof, the opposite side being a mirror image thereof;
FIG. 7 is a sectional view taken along line 7--7 of FIG. 2;
FIG. 8 is a sectional view taken along line 8--8 of FIG. 2;
FIG. 9 is a front perspective view of a second embodiment of the wall block of my new design;
FIG. 10 is a top plan view of FIG. 9;
FIG. 11 is a bottom plan view of FIG. 9;
FIG. 12 is a front elevational view of FIG. 9;
FIG. 13 is a rear elevational view of FIG. 9;
FIG. 14 is a side elevational view of FIG. 9, the opposite side being a mirror image thereof;
FIG. 15 is a sectional view taken along line 15--15 of FIG. 10;
FIG. 16 is a sectional view taken along line 16--16 of FIG. 10;
FIG. 17 is a front perspective view of a third embodiment of the wall block of my new design;
FIG. 18 is a top plan view of FIG. 17;
FIG. 19 is a bottom plan view of FIG. 17;
FIG. 20 is a front elevational view of FIG. 17;
FIG. 21 is a rear elevational view of FIG. 17;
FIG. 22 is a side elevational view of FIG. 17, the opposite side being a mirror image thereof;
FIG. 23 is a sectional view taken along line 23--23 of FIG. 18;
FIG. 24 is a sectional view taken along line 24--24 of FIG. 18;
FIG. 25 is a perspective view of a fourth embodiment of the wall block showing my new design;
FIG. 26 is a top plan view of FIG. 22;
FIG. 27 is a bottom plan view of FIG. 22;
FIG. 28 is a front elevational view of FIG. 22;
FIG. 29 is a rear elevational view of FIG. 22;
FIG. 30 is a side elevational view of FIG. 22, the opposite side being a mirror image thereof;
FIG. 31 is a sectional view taken along line 31--31 of FIG. 26;
FIG. 32 is a sectional view taken along line 32--32 of FIG. 26.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Sep 15 1986 | FORSBERG, PAUL J | KEYSTONE RETAINING WALL SYSTEMS, INC , A CORP OF MINNESOTA | ASSIGNMENT OF ASSIGNORS INTEREST | 004648 | /0846 | |
| Sep 26 1990 | FORSBERG, PAUL J | KEYSTONE RETAINING WALL SYSTEMS, INC | ASSIGNMENT OF ASSIGNORS INTEREST | 005454 | /0960 | |
| Sep 15 1997 | KEYSTONE RETAINING WALL SYSTEMS, INC | U S BANK NATIONAL ASSOCIATION | SECURITY AGREEMENT | 008732 | /0302 | |
| Dec 21 1999 | U S BANK NATIONAL ASSOCIATION | KEYSTONE RETAINING WALL SYSTEMS, INC | RELEASE BY SECURED PARTY SEE DOCUMENT FOR DETAILS | 011238 | /0432 |
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