The ornamental design for the bicycle stand, as shown and described.
FIG. 1 is a perspective view of a bicycle stand comprising the new design, with a typical user and a typical bicycle in broken lines to show environment and forming no part of the claimed design;
FIG. 2 is a perspective view thereof in an alternate position of use, with a typical bicycle in broken lines to show environment and forming no part of the claimed design;
FIG. 3 is a perspective view of the claimed design shown in FIG. 1;
FIG. 4 is an exploded perspective view of the claimed design shown in FIG. 3;
FIG. 5 is an exploded top plan view of the claimed design shown in FIG. 3;
FIG. 6 is a perspective view of a segment of the claimed design shown in FIG. 3, shown separately for clarity; and,
FIG. 7 is a front elevation view of the segment shown in FIG. 6.