Burger Bun

FIG. 1 is a top, front, and side perspective view of a first embodiment of a burger bun showing my new design; FIG. 2 is a right-side elevational view thereof; FIG. 3 is a left-side elevational view thereof; FIG. 4 is a front elevational view thereof; FIG. 5 is a rear elevational view thereof; FIG. 6 is a top plan view thereof; FIG. 7 is a bottom plan view thereof; FIG. 8 is a top, front, and side perspective view of a second embodiment of a burger bun showing my new design; FIG. 9 is a right-side elevational view thereof; FIG. 10 is a left-side elevational view thereof; FIG. 11 is a front elevational view thereof; FIG. 12 is a rear elevational view thereof; FIG. 13 is a top plan view thereof; and, FIG. 14 is a bottom plan view thereof. The dashed broken lines in FIGS. 8 - 12 and 14 show portions of the burger bun that form no part of the claimed design. The boundary lines, comprising dash/dot lines in FIGS. 8 - 12 , indicate boundaries between claimed and unclaimed portions of the burger bun and form no part of the claimed design.