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The ornamental design for a water purification unit, as shown and described
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FIG. 1 is a front view of a water purification unit showing the new design, the partially broken line showing of tubing being for illustrative purposes only and forming no part of the claimed design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a right side elevational view thereof;
FIG. 4 is a rear elevational view thereof, the partially broken line showing of tubing being for illustrative purposes only and forming no part of the claimed design;
FIG. 5 is a bottom plan view thereof; and,
FIG. 6 is a left side elevational view thereof.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Feb 21 1996 | ROBBINS, ADAM | NIMBUS WATER SYSTEMS, INC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 007890 | /0504 | |
| Feb 23 1996 | Nimbus Water Systems, Inc. | (assignment on the face of the patent) | / |
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