Blonder, Greg2019-07-092019-07-092010-09-142009-06-18Greg Blonder. "Headphone holder." U.S. Patent D623,501-S.D623501-Shttps://hdl.handle.net/2144/36326FIG. 1 is a perspective view of the headphone holder in accordance with the new design; FIG. 2 is a front view thereof; FIG. 3 is a back view thereof; FIG. 4 is a right side view thereof; FIG. 5 is a left side view thereof; FIG. 6 is a top view thereof; FIG. 7 is a bottom view thereof; and, FIG. 8 is an alternative perspective view of the headphone holder. It is understood that the broken lines are for illustrative purposes only and form no part of the claimed design.Patent423800