Forsberg, Paul J. (Burnsville, MN)

D/202993

03/14/1989

06/06/1988

Download PDF D300254       PDF help

Click for automatic bibliography generation

Keystone Retaining Wall Systems, Inc. (Edina, MN)

D25/114

D25/116

405/284, 405/285, 405/286, 405/33, 404/41, 404/42, 404/34, 82/608, 82/605, D25/113, D25/114, D25/115, D25/116, D25/117, D25/118

1092621		April, 1914	Worner
1414444	Building tile	May, 1922	Straight
1456498	Brick or tile for furnace construction	May, 1923	Binns
2235646	Masonry	March, 1941	Schaffer
2882689	Dry wall of bricks	April, 1959	Huch et al.
2963828	Building blocks and means for assembling same	December, 1960	Belliveau
3036407	Building block assembly	May, 1962	Dixon
3274742	Refractory wall construction	September, 1966	Paul, Jr. et al.
3390502	Brick and wall construction	July, 1968	Carroll
3430404	APERTURED WALL CONSTRUCTION	March, 1969	Muse
3557505		January, 1971	Kaul
3936987	Interlocking brick or building block and walls constructed therefrom	February, 1976	Calvin
3995434	Wave dissipating wall	December, 1976	Kato et al.
4016693	Insulated masonry block	April, 1977	Warren
4110949	Building block	September, 1978	Cambiuzzi et al.
4207718	Concrete block wall	June, 1980	Schaaf et al.
4208850	Connector for knock-down cabinet	June, 1980	Collier
4228628	Building blocks and connector means therefor	October, 1980	Schlomann
4229123	Inclined retaining wall and element therefor	October, 1980	Heinzmann
4312606	Interlocking prefabricated retaining wall system	January, 1982	Sarikelle
4335549	Method, building structure and side-split block therefore	June, 1982	Dean, Jr.
4454699	Brick fastening device	June, 1984	Strobl
4496226	ANDed motor control system for motorized ophthalmic instrument	January, 1985	Ruckstuhl
4524551	Construction units for the erection of walls and method of utilization	June, 1985	Scheiwiller
4572699	Paving stone	February, 1986	Rinninger

GB2336	February, 1871
GB21385207	February, 1975
FR392474	November, 1908
FR1360872	April, 1964
CH205452	June, 1939
GB2127872A	April, 1984

The Hollow Building Tile Assoc, Handbook, p. 11, Jan. 1924.
Concrete Masonry Pictorial, vol. 33, No. 3 C 1977, p. 35.
The Besser Company brochure "Modular Concrete Block", 1984, pp. 18-19.
The Besser Company brochure "Paving Stone", Jun. 1984, pp.
The Besser Company Bulletin, Feb. 1985.

Word, Hugo A.

Burd, Bartz & Gutenkauf

1. The ornamental design for a retaining wall block, as shown and described.

FIG. 1 is a bottom front perspective view of a retaining wall block of my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a sectional view taken along line 6--6 of FIG. 2; and

FIG. 7 is a sectional view taken along line 7--7 of FIG. 3.