Air vent device

The ornamental design for an air vent device, as shown and described.

FIG. 1 is a front, left side perspective of the air vent device.

FIG. 2 is a front view of the air vent device.

FIG. 3 is a back view of the air vent device.

FIG. 4 is a right side view of the air vent device.

FIG. 5 is a left side view of the air vent device.

FIG. 6 is a top view of the air vent device; and,

FIG. 7 is a bottom view of the air vent device.

The broken lines in the figures are to show portions of the air vent device and form no part of the claimed design.

Patent

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Assignee

Title

Patent	Priority	Assignee	Title
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20140021222,
EP1363069,
EP2560469,

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