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The ornamental design for a portable water quality tester, as shown and described. |
FIG. 1 is a perspective view of a portable water quality tester showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a left side elevational view thereof, the right side being a mirror image thereto;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a top plan view thereof;
FIG. 6 is a bottom plan view thereof.
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Jul 16 1984 | SLOVAK, JACK P | PRO WATER, INC , A CA CORP | ASSIGNMENT OF ASSIGNORS INTEREST | 004330 | /0141 | |
Aug 20 1984 | Pro Water Systems, Inc. | (assignment on the face of the patent) | / | |||
Aug 09 1996 | Cuno Incorporated | MELLON BANK, N A | SECURITY AGREEMENT | 008376 | /0272 |
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