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The ornamental design for a water purification unit, as shown. |
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FIG. 1 is a perspective view taken from the top, front and left side of a water purification unit showing our new design;
FIG. 2 is a right side elevational view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a front elevational view thereof; and
FIG. 6 is a rear elevational view thereof.
Klepa, Peter P., Maples, Paul D., Ropp, Ralph E.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Feb 02 1977 | Paul Douglas, Maples | (assignment on the face of the patent) | / | |||
| Feb 16 1983 | MAPLES, PAUL DOUGLAS | AQUA PRODUCTS INTERNATIONAL, LTD , A CORP OF CA | ASSIGNMENT OF ASSIGNORS INTEREST | 005006 | /0948 | |
| Apr 15 1983 | U S DRINKING WATER, INC , A CA CORP | AQUA PRODUCTS INTERNATIONAL, LTD | ASSIGNMENT OF ASSIGNORS INTEREST | 005030 | /0367 | |
| Mar 31 1989 | AQUA PRODUCTS INTERNATIONAL, LTD , A CORP OF CA | RAYTEC WATERGROUP COMPANY, L P , A DELAWARE LIMITED PARTNERSHIP | ASSIGNMENT OF ASSIGNORS INTEREST | 005038 | /0567 | |
| Mar 27 1990 | RAYTEC INC , A CORP OF DELAWARE | BRUNER CORPORATION, A CORP OF DELAWARE | CHANGE OF NAME SEE DOCUMENT FOR DETAILS APRIL 2, 1990 DELAWARE | 005648 | /0742 | |
| Mar 08 1991 | RAYTEC WATERGROUP COMPANY, L P , A DELAWARE LIMITED PARTNERSHIP | RAYTEC, INC | ASSIGNMENT OF ASSIGNORS INTEREST | 005648 | /0737 | |
| Nov 08 1991 | RAYTEC WATERGROUP COMPANY, L P | RAYTEC, INC | NUNC PRO TUNC ASSIGNMENT SEE DOCUMENT FOR DETAILS EFFECTIVE ON 03 20 1990 | 005939 | /0201 |
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