FIG. 1 is a perspective view of a single ram embodiment of the ornamental design for a top plate of a housing.
FIG. 2 is a side view of a single ram embodiment of the ornamental design for a top plate of a housing.
FIG. 3 is a side view of a single ram embodiment of the ornamental design for a top plate of a housing.
FIG. 4 is a side view of a single ram embodiment of the ornamental design for a top plate of a housing.
FIG. 5 is a side view of a single ram embodiment of the ornamental design for a top plate of a housing.
FIG. 6 is a top view of a single ram embodiment of the ornamental design for a top plate of a housing.
FIG. 7 is a bottom view of a single ram embodiment of the ornamental design for a top plate of a housing.
FIG. 8 is a perspective view of a single ram embodiment of the ornamental design for a top plate of a housing.
FIG. 9 is a perspective view of a double ram embodiment of the ornamental design for a top plate of a housing.
FIG. 10 is a side view of a double ram embodiment of the ornamental design for a top plate of a housing.
FIG. 11 is a side view of a double ram embodiment of the ornamental design for a top plate of a housing.
FIG. 12 is a side view of a double ram embodiment of the ornamental design for a top plate of a housing.
FIG. 13 is a side view of a double ram embodiment of the ornamental design for a top plate of a housing.
FIG. 14 is a top view of a double ram embodiment of the ornamental design for a top plate of a housing.
FIG. 15 is a bottom view of a double ram embodiment of the ornamental design for a top plate of a housing; and,
FIG. 16 is a perspective view of a double ram embodiment of the ornamental design for a top plate of a housing.
The broken lines show portions of a top plate of a housing and of a housing to which it is attached which form no part of the claimed design. A dash-dot broken line defines the boundary of the top plate of a housing, and areas between the dash-dot broken line and other broken lines form no part of the claimed design.