Trencher

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Description

FIG. 1 is a rear left perspective view of a trencher, showing my new design;

FIG. 2 is a rear right perspective view thereof;

FIG. 3 is a reduced rear elevational view thereof; and

FIG. 4 is a reduced left side elevational view thereof.

Referenced Cited
U.S. Patent Documents
D266765 November 2, 1982 Clune
4402352 September 6, 1983 Hodges
4483084 November 20, 1984 Caldwell et al.
4896442 January 30, 1990 Stiff et al.
Foreign Patent Documents
1484817 February 1969 DEX
Patent History
Patent number: D319063
Type: Grant
Filed: May 15, 1987
Date of Patent: Aug 13, 1991
Assignee: Austoft Industries Limited (Bundaberg)
Inventor: James R. Warren (Bundaberg)
Primary Examiner: B. J. Bullock
Assistant Examiner: Sandra Morris
Law Firm: Dorsey & Whitney
Application Number: 7/51,005