Patent
   D271694
Priority
Jan 09 1981
Filed
Jul 08 1981
Issued
Dec 06 1983
Expiry
Dec 06 1997
Assg.orig
Entity
unknown
12
2
n/a
The ornamental design for an audio amplifier, as shown.

FIG. 1 is a top plan view of an audio amplifier showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a right side elevational view thereof; and

FIG. 7 is a front, top and left side perspective view thereof.

Nomura, Toshihito, Imai, Hirotaka

Patent Priority Assignee Title
D278153, Feb 19 1982 Nippon Gakki Seizo Kabushiki Kaisha Piano player
D280503, Mar 19 1982 Hitachi, Ltd. Audio disc player
D285681, Feb 09 1983 Nippon Tsushin Kogyo Kabushiki Kaisha Electronic intercommunication unit
D328897, Mar 12 1990 TEAC Corporation Combined tuner and amplifier
D343395, Feb 06 1991 SONY CORPORATION, A CORP OF JAPAN Amplifier for car
D343838, Dec 18 1991 INFINITY SYSTEMS, INC Amplifier housing
D428872, Oct 29 1998 Sony Corporation Amplifier
D478327, Nov 22 2002 Boston Acoustics, Inc. Radio
D486816, Dec 16 2002 Yamaha Corporation Audio signal amplifier
D959493, Oct 31 2019 Harman International Industries, Incorporated Combined audio and video device
D964307, Jan 23 2020 Audio-Technica Corporation Digital-analog converter
D988284, Oct 22 2021 Portable amplifier
Patent Priority Assignee Title
164289,
D266511, Jan 31 1980 Pioneer Kabushiki Kaisha Amplifier
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Jul 07 1981NOMURA, TOSHIHITOPioneer Electronic CorporationASSIGNMENT OF ASSIGNORS INTEREST 0041530491 pdf
Jul 07 1981IMAI, HIROTAKAPioneer Electronic CorporationASSIGNMENT OF ASSIGNORS INTEREST 0041530491 pdf
Jul 08 1981Pioneer Electronic Corporation(assignment on the face of the patent)
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