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The ornamental design for a water purification unit, as shown and described. |
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FIG. 1 is a perspective view of a water purification unit showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left side elevational view thereof;
FIG. 5 is a top plan view thereof; and,
FIG. 6 is a bottom plan view thereof.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Feb 24 1994 | Vortex Corporation | (assignment on the face of the patent) | / | |||
| Feb 24 1994 | ENGELHARD, ROLF NMI | VORTEX CORPORATION, THE | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 006901 | /0277 | |
| Apr 16 1998 | VORTEX CORPORATION, A CORP OF ARIZONA | LIFE SPRING LIMITED PARTNERSHIP, A NEVADA PARTNERSHIP | CHANGE OF NAME SEE DOCUMENT FOR DETAILS | 009123 | /0984 | |
| Jul 18 2003 | Life Spring Limited Partnership | RCT TECHNOLOGIES, L L C | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 015008 | /0500 | |
| Jul 18 2003 | VORTEX CORPORATION, THE | RCT TECHNOLOGIES, L L C | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 015008 | /0500 |
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