The ornamental design for a lampassembly, as shown and described.
FIG. 1 is a first perspective view of a lamp assembly showing our new ornamental design, according to an embodiment;
FIG. 2 is a second perspective view of the lamp assembly of our new ornamental design;
FIG. 3 is a front elevational view of FIG. 1;
FIG. 4 is a rear elevational view of FIG. 1;
FIG. 5 is a left side elevational view of FIG. 1;
FIG. 6 is a right side elevational view of FIG. 1;
FIG. 7 is a top plan view of FIG. 1; and,
FIG. 8 is a bottom plan view of FIG. 1.
The broken line edges immediately adjacent to the claimed surfaces as shown in the drawings represent the boundaries of the claimed design, while all other broken lines are directed to environment and are for illustrative purpose only; the broken lines form no part of the claimed design.