Patent
   D525613
Priority
May 26 2004
Filed
Aug 02 2004
Issued
Jul 25 2006
Expiry
Jul 25 2020
Assg.orig
Entity
unknown
3
12
n/a
The ornamental design for an audio amplifier, as shown and described.

FIG. 1 is a front view of my new design for an audio amplifier;

FIG. 2 is a rear view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a left side view thereof; and,

FIG. 7 is a front perspective view thereof.

Masui, Isao

Patent Priority Assignee Title
D616862, Dec 01 2009 Portable amplifier
D813189, Aug 10 2017 Vacuum tube based audio amplifier
D893460, Apr 11 2018 Echowell Electronic Co., Ltd. Vacuum tube speaker
Patent Priority Assignee Title
3091736,
3813608,
3931867, Feb 12 1975 Electrostatic Research Corporation Wide range speaker system
4266092, Apr 02 1975 Bose Corporation Loudspeaker system with broad image source
4571555, Mar 30 1984 Motorola, Inc. Re-entrant coaxial cavity power combiner
4656438, Mar 19 1984 WESTINGHOUSE NORDEN SYSTEMS INCORPORATED Power combining cavity
5285500, Apr 13 1992 Audio Products, Inc. Car amplifier with optional plug-in modules
D255793, Apr 11 1978 INTERNATIONAL TAPETRONICS CORPORATION, AN IL CORP Automatic tape cartridge selecting and playing mechanism
D371787, Jul 20 1994 Analogue power amplifier
D416903, Oct 14 1998 Sony Corporation Amplifier
D500488, Feb 24 2004 Sony Corporation Amplifier
D500490, Mar 19 2004 Lenoxx Electronics Corp. Amplifier
//
Executed onAssignorAssigneeConveyanceFrameReelDoc
Jul 26 2004MASUI, ISAOSuzuki Mechatronics YugengaishaASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0156640071 pdf
Aug 02 2004Suzuki Mechatronics Yugengaisha(assignment on the face of the patent)
n/a
Date Maintenance Fee Events


n/a
Date Maintenance Schedule