The ornamental design for an apertureplate of vacuumchamber for an electronmicroscope, as shown and described.
FIG. 1 is a top perspective view of an aperture plate of vacuum chamber for an electron microscope showing my new design;
FIG. 2 is a bottom perspective view thereof;
FIG. 3 is a front elevational view thereof, the rear, left and right side elevational views being mirror images thereof;
FIG. 4 is a top plan view thereof;
FIG. 5 is a bottom plan view thereof; and,
FIG. 6 is a perspective view of the aperture plate of vacuum chamber for an electron microscope in a condition of use.
The broken lines showing of the aperture plate of vacuum chamber for an electron microscope is for the purpose of illustration portions of the article and forms no part of the claimed design.