Lamp Holder

FIG. 1 is a front, left and top perspective view of a lamp holder, showing my new design;

FIG. 2 is a rear, right and bottom perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof; and,

FIG. 9 is a perspective view thereof, showing environment of use with threaded lock screw.

The broken lines shown in the drawings represent unclaimed portions of the design as well as environmental structure that forms no part of the claimed design.