Lamp base

FIGS. 1 and 2 are perspective views of a lamp base, showing our new design;

FIG. 3 is a front view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a right side view thereof, the opposing left side view being a mirror image;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof;

FIGS. 8 and 9 are perspective views of a second embodiment thereof;

FIG. 10 is a front view of FIG. 9 ;

FIG. 11 is a back view of FIG. 9 ;

FIG. 12 is a right side view of FIG. 9 , the opposing left side view being a mirror image;

FIG. 13 is a top view of FIG. 9 ; and,

FIG. 14 is a bottom view of FIG. 9 .

The broken lines shown in the drawings are included for purposes of illustrating environment or portions of the lamp base and form no part of the claimed design.