Trio sewage treatment plant

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Description

FIG. 1 is a top view;

FIG. 2 is a side view;

FIG. 3 is the other side view;

FIG. 4 is a bottom view;

FIG. 5 is an end view; and,

FIG. 6 is the other end view.

Claims

We claim the ornamental design for the trio sewage treatment plant, as shown.

Referenced Cited
U.S. Patent Documents
D152286 January 1949 Patterson
5248417 September 28, 1993 Reid
D426866 June 20, 2000 Drewery
6200472 March 13, 2001 Donald et al.
6592755 July 15, 2003 Nurse, Jr.
D510757 October 18, 2005 Donald et al.
Patent History
Patent number: D539383
Type: Grant
Filed: Aug 31, 2005
Date of Patent: Mar 27, 2007
Inventors: Hubbard H. Donald (Downsville, LA), George E. Johnson (Downsville, LA)
Primary Examiner: Robin Webster
Attorney: Phelps Dunbar, LLP
Application Number: 29/237,493
Classifications
Current U.S. Class: Treatment (D23/207)