The ornamental design for a patterned draingrate, as shown and described.
FIG. 1 is a top view of a first embodiment of a patterned drain grate showing an elongated pattern of drain grate openings;
FIG. 2 is a top view of a second embodiment of a patterned drain grate showing an elongated pattern of drain grate openings;
FIG. 3 is a top view of a third embodiment of a patterned drain grate showing an elongated pattern of drain grate openings;
FIG. 4 is a top view of a fourth embodiment of a patterned drain grate showing an elongated pattern of drain grate openings;
FIG. 5 is a top view of a fifth embodiment of a patterned drain grate showing an elongated pattern of drain grate openings; and,
FIG. 6 is a top view of a sixth embodiment of a patterned drain grate showing an elongated pattern of drain grate openings.
In the drawings, the broken lines showing the foldable edges of the grates in FIGS. 1 through 6 depict portions of the patterned drain cover that form no part of the claim. The dash-dot broken lines define the boundaries of the claim that form no part of the claim.