We claim the ornamental design for a nitrous oxide bottle mount, as shown and described.
FIG. 1 is top plan view a nitrous oxide bottle mount according to the present invention;
FIG. 2 is a front elevation view of the nitrous oxide bottle mount;
FIG. 3 is a bottom plan view of the nitrous oxide bottle mount;
FIG. 4 is a front elevation view like that of FIG. 2, but showing an arbitrary design rearrangement as the nitrous oxide bottle mount is shifted from a closed position to an open position;
FIG. 5 is a left side elevation view of the nitrous oxide bottle mount;
FIG. 6 is a top left rear perspective of the nitrous oxide bottle mount;
FIG. 7 is a rear elevation view of the nitrous oxide bottle mount; and,
FIG. 8 is a right side elevation; view of the nitrous oxide bottle mount.