Headphone

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Information

Patent Grant
D316551

References
Source

Patent Number
D316,551
Date Filed
Thursday, December 29, 1988
35 years ago
Date Issued
Tuesday, April 30, 1991
33 years ago

Inventors
- Kazuo Ichikawa
Original Assignees
- Sony Corporation
Examiners
- Shooman; Theodore M.
Agents
- Eslinger; Lewis H.

US Classifications
- D14 - Recording, communication, or information retrieval equipment
Field of Search
- US
- D14 205-207
- D14 223
- D14 299
- 381 25
- 381 68
- 381 158
- 381 183
- 381 187
- 379 430
- 379 444
- 181 129
- Term of Grant
  14Years

Information

Abstract

Description

Claims

The ornamental design for a headphone, as shown and described.

Priority Claims (1)

Number	Date	Country	Kind
63-25960	Jun 1988	JPX

US Referenced Citations (3)

Number	Name	Date	Kind
D310081	Daido et al.	Aug 1990
D310223	Chudnow	Aug 1990
4668842	Yokoyama et al.	May 1987

Non-Patent Literature Citations (3)

Entry
ID, Sep./Oct. 1987, p. 79, top left--MDR-A60 Digital Headphones.
B. A. Pargh, 1987/88, Fall/Winter Catalog, p. 347, top left--Sony MDRW10LSSY Stereo Headphones.
Best Products Fall Catalog--1987, p. 236, center--Item 6-Sony Sports Walkman.