I claim the ornamental design for a gas lighter, as shown and described.
FIG. 1 is a top, front, right side perspective view of a gas lighter showing my new design;
FIG. 2 is a right side elevation view thereof, the left side elevation view being a mirror image of the right side elevation view;
FIG. 3 is a top plan view thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is an enlarged front elevation view thereof;
FIG. 6 is an enlarged rear elevation view thereof; and,
FIG. 7 is a top, front, right side perspective view of the gas lighter shown in an environment of use of a gas container. The additional broken lines shown in FIG. 7 depict an environmental gas container that form no part of the claimed design.
In FIGS. 1-4 and 7, the gas lighter is shown with symbolic break lines in its length. The appearance of any portion of the article between the break lines forms no part of the claimed design. The broken lines shown in the drawings depict portions of the gas lighter that form no part of the claimed design.