|   
		 
			 The ornamental design for a headphone, as shown and described.  | 
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FIG. 1 is a front perspective view of a headphone showing my new design, the headphone having a door where the door is shown in a partially open position;
FIG. 2 is a right side elevational view thereof, the left view being a mirror image;
FIG. 3 is a front elevation view of the headphone of FIG. 1;
FIG. 4 is a top perspective view of the headphone of FIG. 1;
FIG. 5 is a rear elevation view of the headphone of FIG. 1;
FIG. 6 is a bottom perspective view of the headphone of FIG. 1;
FIG. 7 is a front perspective view of the headphone of FIG. 1 with the door in the closed position;
FIG. 8 is a right side elevational view of FIG. 7, the left view being a mirror image;
FIG. 9 is a front elevation view of the headphone of FIG. 7;
FIG. 10 is a top perspective view of the headphone of FIG. 7;
FIG. 11 is a front perspective view of an alternate embodiment of FIG. 1, without a door;
FIG. 12 is a right side elevational view of FIG. 11, the left view being a mirror image;
FIG. 13 is a front elevation view of the headphone of FIG. 11; and,
FIG. 14 is a top perspective view of the headphone of FIG. 11;
FIG. 15 is a rear elevational view of the headphone of FIG. 11; and,
FIG. 16 is a bottom perspective view of the headphone of FIG. 11.
| Patent | Priority | Assignee | Title | 
| 6320960, | Sep 25 1998 | GN NETCOM, INC | Headset with adjustable earpiece | 
| 6775390, | Dec 24 2001 | GN NETCOM, INC | Headset with movable earphones | 
| 7155025, | Aug 30 2002 | Surround sound headphone system | |
| D436095, | Sep 24 1999 | HELLO DIRECT, INC | Headset with adjustable earpiece | 
| D468722, | Dec 24 2001 | HELLO DIRECT, INC | Headset with moveable earphones | 
| D930840, | Oct 17 2019 | Hearing enhancement device | 
| Patent | Priority | Assignee | Title | 
| 2977426, | |||
| 4890688, | Apr 14 1989 | Anechoic ear piece | |
| 4958697, | Sep 11 1989 | The United States of America as represented by the Secretary of the Army | Anatomically shaped earseals for headsets | 
| 229129, | |||
| D320798, | Apr 23 1990 | Earring clearance telephone handset earpiece or similar article | 
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