The ornamental design for a portableheater, as shown and described.
FIG. 1 is a right perspective view of a portable heater showing our new design;
FIG. 2 is a left perspective view thereof;
FIG. 3 is bottom perspective view thereof;
FIG. 4 is a front view thereof;
FIG. 5 is a right side view of thereof;
FIG. 6 is a rear view of thereof;
FIG. 7 is a left side view of thereof;
FIG. 8 is a top view of thereof; and,
FIG. 9 is a bottom view of thereof.
The evenly-spaced dashed lines in the drawings depict portions of the portable heater that form no part of the claimed design. The dot-dot lines illustrate the boundaries of the claim and form no part of the claimed design.
CORRECTIVE ASSIGNMENT TO CORRECT THE PREVIOUSLY RECORDED ASSIGNMENT AGAINST PROPERTY NUMBER 16731267 PREVIOUSLY RECORDED ON REEL 054837 FRAME 0294 ASSIGNOR S HEREBY CONFIRMS THE SECURITY INTEREST