Patent
   D321689
Priority
Dec 03 1988
Filed
Jun 01 1989
Issued
Nov 19 1991
Expiry
Nov 19 2005
Assg.orig
Entity
unknown
15
4
n/a
The ornamental design for an audio amplifier, as shown and described.

FIG. 1 is a top, front and right side perspective view of an audio amplifier showing my new design;

FIG. 2 is a top, front and right perspective view thereof, shown with the cassette cover in the closed position;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a rear elevational view thereof; and

FIG. 8 is a bottom plan view thereof.

Yamakawa, Yoshiro

Patent Priority Assignee Title
D348064, Aug 09 1991 SHARP KABUSHIKI KAISHA, A CORP OF JAPAN Broadcast satellite tuner
D349719, Jan 21 1992 Yamaha Corporation Electronic controller unit for a piano
D378091, Mar 29 1996 Kenwood Corporation Combined audio and video amplifier
D379354, Mar 29 1996 Kenwood Corporation Combined audio and video amplifier
D379813, Oct 27 1994 Sega Enterprises, Ltd; NIPPON COLUMBIA CO , LTD Amplifier for Hi-Fi
D385278, Jun 14 1996 Sony Corporation Disc player combined with a tape player
D389480, Dec 04 1995 Sony Corporation Disc player combined with radio tuner and an amplifier
D403320, Dec 04 1995 Sony Corporation Disc player combined with a radio tuner and an amplifier
D473202, Apr 15 2002 Sony Corporation Disc player
D509492, Sep 19 2003 Lite-On It Corporation Multi-media recorder
D509811, Aug 21 2003 Sharp Kabushiki Kaisha Digital video disk recorder
D510076, Feb 27 2004 Lite-On It Corporation Multi-media DVD recording and/or reproducing device
D524270, Apr 01 2004 Funai Electric Company Limited Video disk player
D815642, Jul 01 2016 Corning Optical Communications LLC Rack mountable hardware with surface ornamentation
D964307, Jan 23 2020 Audio-Technica Corporation Digital-analog converter
Patent Priority Assignee Title
D253823, Apr 26 1977 Braun Aktiengesellschaft Combined tuner and amplifier
D275668, May 03 1982 RCA Corporation Video disc player
D293322, Apr 12 1985 Kabushiki Kaisha Toshiba Audio tuner
D314198, Mar 18 1988 TEAC Corporation Digital audio disc player
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Executed onAssignorAssigneeConveyanceFrameReelDoc
May 30 1989YAMAKAWA, YOSHIROYAMAHA CORPORATION, A CORP OF JAPANASSIGNMENT OF ASSIGNORS INTEREST 0051300752 pdf
Jun 01 1989Yamaha Corporation(assignment on the face of the patent)
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