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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 |
Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Jul 07 1981 | NOMURA, TOSHIHITO | Pioneer Electronic Corporation | ASSIGNMENT OF ASSIGNORS INTEREST | 004153 | /0491 | |
Jul 07 1981 | IMAI, HIROTAKA | Pioneer Electronic Corporation | ASSIGNMENT OF ASSIGNORS INTEREST | 004153 | /0491 | |
Jul 08 1981 | Pioneer Electronic Corporation | (assignment on the face of the patent) | / |
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