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We claim the ornamental design for the trio sewage treatment plant, as shown.
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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.
Johnson, George E., Donald, Hubbard H.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Jun 26 2013 | JOHNSON, GEORGE E | ECOLOGICAL TANKS, INC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 030900 | /0026 | |
| Jun 26 2013 | DONALD, HUBBARD H | ECOLOGICAL TANKS, INC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 030900 | /0026 |
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