Erosion control device

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Description

FIG. 1 is a downward front perspective view of a erosion control device embodying my design.

FIG. 2 is an upward rear perspective view of the erosion control device illustrated in FIG. 1.

FIG. 3 is a top plan view of the erosion control device illustrated in FIG. 1.

FIG. 4 is a front elevational view of the erosion control device illustrated in FIG. 1.

Referenced Cited
U.S. Patent Documents
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1230608 June 1917 Sheldon
1277829 September 1918 Baum
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2191924 February 1940 Humphrey
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3844125 October 1974 Williams, Sr.
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4367978 January 11, 1983 Schaaf et al.
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Foreign Patent Documents
953520 August 1974 CAX
1111264 October 1981 CAX
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Other references
  • Information leaflet on Great Lakes Environmental Marine Ltd. of Chicago, Ill. Low Cost Shore Protection--Final Report on The Erosion Control Demonstration Program; U.S. Army Corps of Engineers, 1981.
Patent History
Patent number: D302313
Type: Grant
Filed: Nov 28, 1986
Date of Patent: Jul 18, 1989
Inventor: Walter J. Lenson (London, Ontario)
Primary Examiner: A. Hugo Word
Law Firm: Banner, Birch, McKie & Beckett
Application Number: 6/937,524