Patent
   D316904
Priority
May 14 1986
Filed
Nov 21 1988
Issued
May 14 1991
Expiry
May 14 2005

TERM.DISCL.
Assg.orig
Entity
unknown
38
39
n/a
The ornamental design for a convex block, as shown and described.

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

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is an end elevational view, the opposite end being a mirror image thereof;

FIG. 6 is a rear elevational view thereof;

FIG. 7 is a front perspective view of a second embodiment of a convex block showing my new design;

FIG. 8 is a top plan view of FIG. 7;

FIG. 9 is a front elevational 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 front perspective view of a third embodiment of a convex block showing my new design;

FIG. 14 is a top plan view of FIG. 13;

FIG. 15 is a front elevational view of FIG. 13;

FIG. 16 is a bottom plan view of FIG. 13;

FIG. 17 is an end elevational view of FIG. 13, the opposite end being a mirror image thereof;

FIG. 18 is a rear elevational view of FIG. 13;

FIG. 19 is a front prospective view of a fourth embodiment of the convex block showing my new design;

FIG. 20 is a top plan view of FIG. 19;

FIG. 21 is a front elevational view of FIG. 19;

FIG. 22 is a bottom plan view of FIG. 19;

FIG. 23 is a side elevational view of FIG. 19, the opposite side being a mirror image thereof;

FIG. 24 is a rear elevational view of FIG. 19;

FIG. 25 is a front perspective view of a fifth embodiment of a convex block showing my new design;

FIG. 26 is a top plan view of FIG. 25;

FIG. 27 is a front elevational view of FIG. 25;

FIG. 28 is a bottom plan view of FIG. 25;

FIG. 29 is a side elevational view of FIG. 25, the opposite side being a mirror image thereof; and

FIG. 30 is a rear elevational view of FIG. 25.

Forsberg, Paul J.

Patent Priority Assignee Title
5490363, Oct 06 1992 Anchor Wall Sytems, Inc. Composite masonry block
5589124, Sep 28 1989 Block Systems, Inc. Method of forming composite masonry blocks
5704183, May 04 1993 Anchor Wall Systems, Inc. Composite masonry block
5709062, Oct 06 1992 Anchor Wall Systems, Inc. Composite masonry block
5711129, Oct 06 1992 Anchor Wall Systems, Inc. Masonry block
5795105, Oct 06 1992 ANCHOR WALL SYSTEMS, INC Composite masonry block
5827015, Sep 27 1989 Anchor Wall Systems, Inc. Composite masonry block
5879603, Nov 08 1996 ANCHOR WALL SYSTEMS, INC Process for producing masonry block with roughened surface
6029943, Nov 08 1996 ANCHOR WALL SYSTEMS, INC Splitting technique
6113318, Oct 06 1992 Anchor Wall Systems, Inc. Composite masonry block
6142713, Sep 27 1989 Anchor Wall Systems, Inc. Composite masonry block
6178704, Nov 08 1996 Anchor Wall Systems, Inc. Splitting technique
6183168, Sep 27 1989 Anchor Wall Systems, Inc. Composite masonry block
6312197, Sep 27 1989 Anchor Wall Systems, Inc. Composite masonry block
6616382, Sep 27 1989 Anchor Wall Systems, Inc. Composite masonry block
7048472, Sep 27 1989 Anchor Wall Systems, Inc. Composite masonry block
7360970, Sep 27 1989 Anchor Wall Systems, Inc. Composite masonry block
7384215, Oct 06 1992 Anchor Wall Systems, Inc. Composite masonry block
7823360, May 24 2006 Open core building blocks system
D359811, May 24 1993 Concrete block
D407922, Apr 08 1998 L.H.F., Redon Stackable storage element
D407923, Oct 22 1997 L.H.F. Stackable storage element
D408557, Feb 27 1998 Concrete block and brick
D408930, Apr 27 1998 Concrete block and brick
D409313, Feb 27 1998 Concrete block and brick
D417506, Dec 03 1997 Retaining wall block
D437422, Aug 17 1999 ANCHOR WALL SYSTEMS, INC Face of a retaining wall block
D438640, Aug 17 1999 ANCHOR WALL SYSTEMS, INC Face of a retaining wall block
D445512, Oct 27 1997 ANCHOR WALL SYSTEMS, INC Retaining wall block
D458693, Nov 08 1996 ANCHOR WALL SYSTEMS, INC Retaining wall block
D464145, Jun 19 2001 Anchor Wall Systems Side wall portion of a retaining wall block
D482133, Jun 19 2001 Anchor Wall Systems Front portion of a retaining wall block
D487157, Dec 13 2002 Building block
D491676, Dec 13 2002 Building block
D506837, Jun 19 2001 Anchor Wall Systems Front portion of a retaining wall block
D513805, Jun 19 2001 Anchor Wall Systems Front portion of a retaining wall block
D602171, Feb 05 2008 SCI MATERIALS Concrete block
D767045, May 19 2015 Curved block model construction component
Patent Priority Assignee Title
1092621,
126547,
1414444,
1456498,
2235646,
228052,
2882689,
2963828,
3036407,
3274742,
3390502,
3430404,
3557505,
3936987, Jan 13 1975 Interlocking brick or building block and walls constructed therefrom
3995434, Aug 08 1974 Nippon Tetrapod Co., Ltd.; Robert Q., Palmer Wave dissipating wall
4016693, Aug 22 1975 Warren Insulated Bloc, Inc. Insulated masonry block
4110949, Jul 05 1976 Baupres AG Building block
4207718, May 15 1978 WAVE WEDGE CORPORATION Concrete block wall
4208850, May 11 1978 Connector for knock-down cabinet
4228628, Nov 10 1976 Building blocks and connector means therefor
4229123, Jan 18 1978 Inclined retaining wall and element therefor
4312606, Mar 21 1980 Interlocking prefabricated retaining wall system
4335549, Dec 01 1980 DESIGNER BLOCKS, INC Method, building structure and side-split block therefore
4454699, Mar 15 1982 INTERSTATE BRICK COMPANY, A CORP OF UT Brick fastening device
4496266, Dec 30 1981 Kronimus & Sohn GmbH & Co. KG Curved like paving stone element for use in setting a curved paving
4524551, Mar 10 1981 Construction units for the erection of walls and method of utilization
4572699, Dec 18 1982 HANS RINNINGER U SOHN GMBH U CO Paving stone
4738059, Jan 31 1986 Designer Blocks, Inc. Split masonry block, block wall construction, and method therefor
566924,
810748,
CH205452,
119606,
237704,
D301064, May 14 1986 KEYSTONE RETAINING WALL SYSTEMS, INC , A CORP OF MINNESOTA Convex block
FR1360872,
FR392474,
GB1385207,
GB2127872,
GB336,
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Executed onAssignorAssigneeConveyanceFrameReelDoc
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
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