Infra-red ray transmission machine for cordless headphone

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Information

Patent Grant
D337767

References
Source

Patent Number
D337,767
Date Filed
Monday, November 19, 1990
33 years ago
Date Issued
Tuesday, July 27, 1993
31 years ago

Inventors
- Katsumi Yamatogi
- Takashi SOGABE
Original Assignees
- Sony Corporation
Examiners
- Ansher; Bernard
- Siegel; Mitchell I.
Agents
- Eslinger; Lewis H.
- Maioli; Jay H.

US Classifications
- D14 - Recording, communication, or information retrieval equipment
Field of Search
- US
- D14 124
- D14 144
- D14 155
- D14 205
- D14 223
- D14 299
- D19 81
- D19 84
- D21 48
- Term of Grant
  14Years

Information

Abstract

Description

Claims

The ornamental design for an infra-red ray transmission machine for cordless headphone, as shown.

Priority Claims (1)

Number	Date	Country	Kind
2-16870	May 1990	JPX

US Referenced Citations (3)

Number	Name	Date	Kind
D262041	Schmidt	Nov 1981
D274631	Smith, III et al.	Jul 1984
D275096	Festa et al.	Aug 1984

Non-Patent Literature Citations (1)

Entry
Positioning and Tracking Controls; Oct. 1984; p. 8; (lower right hand corner).