Construction block

Description

FIG. 1 is a perspective view of the construction 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 sectional view taken along the line 6--6 of FIG. 3; and

FIG. 7 is a sectional view taken along the line 7--7 of FIG. 2.

Claims

The ornamental design for a construction block, as shown.

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Inventors:	Forsberg; Paul J. (Richfield, MN)
Assignee:	Keystone Retaining Wall Systems, Inc. (Edina, MN)
Appl. No.:	06/909,097
Filed:	September 18, 1986

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Current U.S. Class:	D25/116
Field of Search:	;405/284,285,286,33 ;404/41,42,34 ;52/608,605 ;D25/113,114,116,58

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References Cited [Referenced By]

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U.S. Patent Documents

126547	May 1872	Hickox
228052	May 1880	Frost
D237704	November 1974	Lane
566924	September 1896	Morrin
810748	January 1906	Haller et al.
1092621	April 1914	Worner
1456498	May 1923	Binns
2235646	March 1941	Schaffer
2963828	December 1960	Belliveau
3036407	May 1962	Dixon
3274742	September 1966	Paul, Jr. et al.
3390502	July 1968	Carroll
3430404	March 1969	Muse
3557505	January 1971	Kaul
3936987	February 1976	Calvin
3995434	December 1976	Kato et al.
4016693	April 1977	Warren
4110948	September 1978	Cambiuzzi et al.
4207718	June 1980	Schaaf et al.
4208805	June 1980	Collier
4228628	October 1980	Schlomann
4229123	October 1980	Heinzmann
4335549	June 1982	Dean
4454699	June 1984	Strobl
4524551	June 1985	Scheiwiller
4572699	February 1986	Rinninger

Foreign Patent Documents

	392474		Nov 1908		FR
	1385207		Feb 1975		GB

Other References

The Besser Company bulletin, Feb. 1985. . The Hollow Building Tile Assoc. handbook, p. 11, Jan. 1924. . The Besser Company brochure, "Modular Concrete Block", 1984. . The Besser Company brochure, "Paving Stone", Jun. 1984..

Primary Examiner: Word; A. Hugo
Attorney, Agent or Firm: Burd, Bartz & Gutenkauf