Patent
   D975670
Priority
Jun 11 2021
Filed
Jun 11 2021
Issued
Jan 17 2023
Expiry
Jan 17 2038
Assg.orig
Entity
unknown
2
12
n/a
The ornamental design for a headphone amplifier, as shown and described.

FIG. 1 is a front and top perspective view of a headphone amplifier, showing my new design;

FIG. 2 is a rear and bottom perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a right side elevation view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken lines in the figures illustrate portions of the headphone amplifier that form no part of the claimed design.

He, Naiyong

Patent Priority Assignee Title
ER1985,
ER7705,
Patent Priority Assignee Title
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D398304, Nov 25 1997 MOTOROLA SOLUTIONS, INC Portable radio housing
D412705, Jun 01 1998 Whirlwind Music Distributors, Inc. Combined portable microphone and speaker
D429717, Jan 08 1999 Sony Corporation Speaker box
D510338, May 21 2004 LOGITECH EUROPE S A Speaker controller
D532425, Oct 11 2005 Samsung Electronics Co., Ltd. MP3 player
D552076, Nov 03 2005 Vinci Brands LLC Combined radio tuner, remote controller and recording unit
D683714, Jul 25 2012 OM DIGITAL SOLUTIONS CORPORATION Voice recording/reproducing device
D746254, Jan 31 2014 D&M Holdings, Inc. Audio amplifier
D762614, Jun 11 2014 Kabushiki Kaisha Audio-Technica Wireless receiver
D773432, Dec 17 2014 Vinci Brands LLC Amplifier
D952603, Sep 29 2020 Loudspeaker
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Jun 11 2021HE, NAIYONGGUANGZHOU RANTION TECHNOLOGY CO ,LTD ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0567560635 pdf
Jun 11 2021HE, NAIYONGDONNER TECHNOLOGY LLCASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0567560635 pdf
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