Ground aerator

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Description

FIG. 1 is a top, front, and side elevational view of a ground aerator showing my new design;

FIG. 2 is a front elevational view thereof, the rear being a mirror image of that shown;

FIG. 3 is a side elevational view thereof, the opposite side being a mirror image of that shown;

FIG. 4 is a top plan view thereof; and

FIG. 5 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D221727 September 1971 Erickson
D290809 July 14, 1987 Elliott
D301535 June 13, 1989 Cain
1635308 July 1927 Botsford
1888170 November 1932 Hornbaker
2720023 October 1955 Koscher et al.
3199817 August 1965 Fox
3290821 December 1966 Parry
Other references
  • Green River Tools Catalogue (1985) p. 11, "The Bio-Fork". Washburn Hardware Catalogue (1941) p. 36, "Sectional Ornamental Fence". True-Temper advertisement (1965) "Lawn Aerator #A2P".
Patent History
Patent number: D309242
Type: Grant
Filed: Jan 6, 1988
Date of Patent: Jul 17, 1990
Inventor: Joseph W. Laslo (Edmonton, Alberta)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Brian N. Vinson
Attorney: W. Scott Carson
Application Number: 7/141,466
Classifications
Current U.S. Class: D 8/6; D 8/1