Blade plough


FIG. 1 is a front perspective view of the blade plough;

FIG. 2 is a rear oblique perspective view;

FIG. 3 is a rear perspective view with wings lowered;

FIG. 4 is a rear perspective view with wings raised;

FIG. 5 is a front view of one of the wings.

Referenced Cited
U.S. Patent Documents
D216143 November 1969 Cline
Other references
  • John Deere, Drawn and Mounted Chisel Plows, Catalog, 10/11/77, p. 13.
Patent History
Patent number: D267320
Type: Grant
Filed: Nov 7, 1979
Date of Patent: Dec 21, 1982
Inventor: Darrell C. Symonds (Welshpool, Western Australia)
Primary Examiner: Veronica O'Keefe
Law Firm: Oldham, Oldham, Hudak & Weber, Co.
Application Number: 6/92,108