The ornamental design for a noisefiltercase, as shown and described.
FIG. 1 is a perspective view of a noise filter case;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a top view thereof;
FIG. 5 is a bottom view thereof;
FIG. 6 is a left-side view thereof;
FIG. 7 is a right-side view thereof; and,
FIG. 8 is an enlarged fragmentary view thereof.
The broken lines shown represent environmental subject matter and form no part of the claim. Where broken lines abut a claimed surface it is understood that those broken lines represent an unclaimed boundary between claimed and unclaimed surfaces. None of the broken lines form any part of the claimed design.