Construction block
Latest Keystone Retaining Wall Systems, Inc. Patents:
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.
Referenced Cited
U.S. Patent Documents
Foreign Patent Documents
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Patent History
Patent number: D296365
Type: Grant
Filed: Sep 18, 1986
Date of Patent: Jun 21, 1988
Assignee: Keystone Retaining Wall Systems, Inc. (Edina, MN)
Inventor: Paul J. Forsberg (Richfield, MN)
Primary Examiner: A. Hugo Word
Law Firm: Burd, Bartz & Gutenkauf
Application Number: 6/909,097
Type: Grant
Filed: Sep 18, 1986
Date of Patent: Jun 21, 1988
Assignee: Keystone Retaining Wall Systems, Inc. (Edina, MN)
Inventor: Paul J. Forsberg (Richfield, MN)
Primary Examiner: A. Hugo Word
Law Firm: Burd, Bartz & Gutenkauf
Application Number: 6/909,097
Classifications
Current U.S. Class:
Arcuate Detail (D25/116)