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The ornamental design for a pressure relief plate, as shown and described. |
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FIG. 1 is a front elevational view of a pressure relief plate showing my new design;
FIG. 2 is a bottom plan view thereof;
FIG. 3 is a side elevational view thereof; and,
FIG. 4 is an end elevational view thereof, the opposite end being a mirror image of that shown.
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