Patent
   D317048
Priority
May 14 1986
Filed
Nov 21 1988
Issued
May 21 1991
Expiry
May 21 2005

TERM.DISCL.
Assg.orig
Entity
unknown
186
37
n/a
The ornamental design for a wall block, as shown and described.

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.

Forsberg, Paul J.

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Nov 21 1988Keystone Retaining Wall Systems, Inc.(assignment on the face of the patent)
Dec 29 1988FORSBERG, PAUL J KEYSTONE RETAINING WALL SYSTEMS, INC , 7600 FRANCE AVE , SOUTH, EDINA, MN 55435, A CORP OF MNASSIGNMENT OF ASSIGNORS INTEREST 0050600817 pdf
Sep 15 1997KEYSTONE RETAINING WALL SYSTEMS, INC U S BANK NATIONAL ASSOCIATIONSECURITY AGREEMENT0087320302 pdf
Dec 21 1999U S BANK NATIONAL ASSOCIATIONKEYSTONE RETAINING WALL SYSTEMS, INC RELEASE BY SECURED PARTY SEE DOCUMENT FOR DETAILS 0112380432 pdf
Dec 07 2004KEYSTONE RETAINING WALL SYSTEMS, INC WACHOVIA BANK, NATIONAL ASSOCIATION, AS ADMINISTRATIVE AGENTNOTICE OF GRANT OF SECURITY INTEREST0156760385 pdf
Jan 31 2006WACHOVIA BANK, NATIONAL ASSOCIATION, AS ADMINISTRATIVE AGENTKEYSTONE RETAINING WALL SYSTEMS, INC TERMINATION OF SECURITY INTEREST IN PATENTS0171150305 pdf
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