Lamp tube

FIG. 1 is a top, front, left side perspective view of a lamp tube, showing our new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is another perspective view but showing the disassembled lamp tube segments for clarity of illustration.

In FIGS. 1 - 3 , 6 - 8 , the length of the design is broken by two pairs of break lines. The broken away symbols in the drawings indicate that the appearance of any portion of the article between each of the pairs of break lines forms no part of the claimed design.