The ornamental design for an airtreatmentappliance, substantially as shown and described.
FIG. 1 is a top isometric view of an air treatment appliance, showing one embodiment of our new design.
FIG. 2 is a bottom isometric view thereof.
FIG. 3 is a front elevational view thereof.
FIG. 4 is a rear elevational view thereof.
FIG. 5 is a left side elevational view thereof.
FIG. 6 is a right side elevational view thereof.
FIG. 7 is a top plan view thereof.
FIG. 8 is a bottom plan view thereof.
FIG. 9 is a top isometric view of an air treatment appliance, showing another embodiment of our new design.
FIG. 10 is a bottom isometric view thereof.
FIG. 11 is a front elevational view thereof.
FIG. 12 is a rear elevational view thereof.
FIG. 13 is a left side elevational view thereof.
FIG. 14 is a right side elevational view thereof.
FIG. 15 is a top plan view thereof; and,
FIG. 16 is a bottom plan view thereof.
In the drawings, stippling and tangency lines in the drawings represent the three-dimensional contours of the design, and are not intended to indicate surface decoration. The broken lines adjacent to stippled surfaces depict the claim boundaries and form no part of the claim; all other broken lines depict environment and form no part of the claim.