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The ornamental design for a display testing device, as shown and described.
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FIG. 1 is a perspective view of the front of a display testing device, according to a first embodiment of the invention;
FIG. 2 is a bottom view thereof;
FIG. 3 is a top view thereof;
FIG. 4 is a right side view thereof;
FIG. 5 is a front view thereof;
FIG. 6 is a back view thereof;
FIG. 7 is a perspective view of the front of a display testing device, according to a second embodiment of the invention;
FIG. 8 is a bottom view thereof;
FIG. 9 is a top view thereof;
FIG. 10 is a right side view thereof;
FIG. 11 is a front view thereof; and,
FIG. 12 is a back view thereof.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Jul 02 2003 | E. I. du Pont de Nemours and Company | (assignment on the face of the patent) | / | |||
| Sep 18 2003 | HEUGHEBAERT, LAURENT | DUPONT DISPLAYS, INC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 014048 | /0625 | |
| Feb 13 2004 | DUPONT DISPLAYS, INC | E I DU PONT DE NEMOURS AND COMPANY | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 014362 | /0805 | |
| Apr 11 2019 | E I DU PONT DE NEMOURS AND COMPANY | LG Chem, Ltd | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 050150 | /0482 |
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